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SCHEME OF WORK
Mathematics
Form 3 2026
TERM I
School


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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
2 1
Approximations and Errors
Computing using calculators
By the end of the lesson, the learner should be able to:
Solve basic operations using calculators
Use calculator functions effectively
Apply calculator to mathematical computations
Q/A on calculator familiarity
Discussions on calculator operations
Solving basic arithmetic problems
Demonstrations of calculator functions
Explaining proper calculator usage
Calculators, operation guides
Calculators, verification worksheets
KLB Mathematics Book Three Pg 24-26
2 2
Approximations and Errors
Approximation
By the end of the lesson, the learner should be able to:
Approximate values by rounding off
Round numbers to specified decimal places
Apply rounding rules correctly
Q/A on rounding concepts
Discussions on rounding techniques
Solving rounding problems
Demonstrations of rounding methods
Explaining rounding rules and applications
Calculators, rounding charts
KLB Mathematics Book Three Pg 29-30
2 3
Approximations and Errors
Estimation
By the end of the lesson, the learner should be able to:
Approximate values by truncation
Estimate values using appropriate methods
Compare estimation techniques
Q/A on estimation strategies
Discussions on truncation vs rounding
Solving estimation problems
Demonstrations of truncation methods
Explaining when to use different techniques
Calculators, estimation guides
KLB Mathematics Book Three Pg 30
2 4
Approximations and Errors
Accuracy and errors
Percentage error
By the end of the lesson, the learner should be able to:
Find the absolute error
Calculate relative error
Distinguish between different error types
Q/A on error concepts
Discussions on error calculations
Solving absolute and relative error problems
Demonstrations of error computation
Explaining error significance
Calculators, error calculation sheets
Calculators, percentage error worksheets
KLB Mathematics Book Three Pg 31-32
2 5
Approximations and Errors
Rounding off error and truncation error
By the end of the lesson, the learner should be able to:
Find the rounding off error
Calculate truncation error
Compare rounding and truncation errors
Q/A on error types
Discussions on error sources
Solving rounding and truncation error problems
Demonstrations of error comparison
Explaining error analysis
Calculators, error comparison charts
KLB Mathematics Book Three Pg 34
2 6
Approximations and Errors
Propagation of errors
By the end of the lesson, the learner should be able to:
Find the propagation of errors in addition and subtraction
Calculate combined errors
Apply error propagation rules
Q/A on error propagation concepts
Discussions on addition/subtraction errors
Solving error propagation problems
Demonstrations of error combination
Explaining propagation principles
Calculators, error propagation guides
Calculators, verification worksheets
KLB Mathematics Book Three Pg 35-36
2 7
Approximations and Errors
Propagation of errors in multiplication
By the end of the lesson, the learner should be able to:
Find the propagation of errors in multiplication
Calculate relative errors in products
Apply multiplication error rules
Q/A on multiplication error concepts
Discussions on product error calculation
Solving multiplication error problems
Demonstrations of relative error computation
Explaining multiplication error principles
Calculators, multiplication error guides
KLB Mathematics Book Three Pg 36-37
2 8
Approximations and Errors
Propagation of errors in multiplication
Propagation of errors in division
By the end of the lesson, the learner should be able to:
Find the propagation of errors in multiplication
Solve complex multiplication error problems
Compare different error propagation methods
Q/A on advanced multiplication errors
Discussions on complex error scenarios
Solving challenging multiplication problems
Demonstrations of method comparison
Explaining optimal error calculation
Calculators, method comparison charts
Calculators, division error worksheets
KLB Mathematics Book Three Pg 36-37
3 1
Approximations and Errors
Propagation of errors in division
By the end of the lesson, the learner should be able to:
Find the propagation of errors in division
Solve complex division error problems
Verify division error calculations
Q/A on division error mastery
Discussions on complex division scenarios
Solving advanced division error problems
Demonstrations of error verification
Explaining accuracy in division errors
Calculators, verification guides
KLB Mathematics Book Three Pg 37-38
3 2
Approximations and Errors
Word problems
By the end of the lesson, the learner should be able to:
Find the propagation of errors of a word problem
Apply error analysis to real-world situations
Solve comprehensive error problems
Q/A on chapter consolidation
Discussions on real-world applications
Solving comprehensive word problems
Demonstrations of problem-solving strategies
Explaining practical error analysis
Calculators, word problem sets, comprehensive review sheets
KLB Mathematics Book Three Pg 39-40
3 3
Trigonometry (II)
The unit circle
By the end of the lesson, the learner should be able to:
Draw the unit circle
Identify coordinates on the unit circle
Understand the unit circle concept
Q/A on basic circle properties
Discussions on unit circle construction
Solving problems using unit circle
Demonstrations of circle drawing
Explaining unit circle applications
Calculators, protractors, rulers, pair of compasses
KLB Mathematics Book Three Pg 41-42
3 4
Trigonometry (II)
Trigonometric ratios of angles greater than 90°
By the end of the lesson, the learner should be able to:
Find the trigonometric values of angles
Calculate trigonometric ratios for obtuse angles
Apply reference angle concepts
Q/A on basic trigonometric ratios
Discussions on angle extensions
Solving obtuse angle problems
Demonstrations of reference angles
Explaining quadrant relationships
Calculators, protractors, rulers, pair of compasses
KLB Mathematics Book Three Pg 44-45
3 5
Trigonometry (II)
Trigonometric ratios of angles greater than 90°
Trigonometric ratios of negative angles
By the end of the lesson, the learner should be able to:
Find the trigonometric values of angles
Solve problems with angles in different quadrants
Apply ASTC rule for sign determination
Q/A on quadrant properties
Discussions on sign conventions
Solving multi-quadrant problems
Demonstrations of ASTC rule
Explaining trigonometric signs
Calculators, quadrant charts
Geoboards, graph books, calculators
KLB Mathematics Book Three Pg 46-47
3 6
Trigonometry (II)
Trigonometric ratios of angles greater than 360°
By the end of the lesson, the learner should be able to:
Find the trigonometric values of angles greater than 360°
Apply coterminal angle concepts
Reduce angles to standard position
Q/A on angle reduction concepts
Discussions on coterminal angles
Solving extended angle problems
Demonstrations of angle reduction
Explaining periodic properties
Geoboards, graph books, calculators
KLB Mathematics Book Three Pg 49-51
3 7
Trigonometry (II)
Use of mathematical tables
By the end of the lesson, the learner should be able to:
Use mathematical tables to find sine and cosine
Read trigonometric tables accurately
Apply table interpolation methods
Q/A on table reading skills
Discussions on table structure
Solving problems using tables
Demonstrations of interpolation
Explaining table accuracy
Mathematical tables, calculators
KLB Mathematics Book Three Pg 51-55
3 8
Trigonometry (II)
Use of mathematical tables
Use of calculators
By the end of the lesson, the learner should be able to:
Use mathematical tables to find tan
Apply tables for all trigonometric functions
Compare table and calculator results
Q/A on tangent table usage
Discussions on function relationships
Solving comprehensive table problems
Demonstrations of result verification
Explaining table limitations
Mathematical tables, calculators
Calculators, function guides
KLB Mathematics Book Three Pg 55-56
4 1
Trigonometry (II)
Radian measure
By the end of the lesson, the learner should be able to:
Convert degrees to radians and vice versa
Apply radian measure in calculations
Understand radian-degree relationships
Q/A on angle measurement systems
Discussions on radian concepts
Solving conversion problems
Demonstrations of conversion methods
Explaining radian applications
Calculators, conversion charts
KLB Mathematics Book Three Pg 58-61
4 2
Trigonometry (II)
Simple trigonometric graphs
Graphs of cosines
By the end of the lesson, the learner should be able to:
Draw tables for sine of values
Plot graphs of sine functions
Identify sine graph properties
Q/A on coordinate graphing
Discussions on periodic functions
Solving graphing problems
Demonstrations of sine plotting
Explaining graph characteristics
Calculators, graph papers, plotting guides
KLB Mathematics Book Three Pg 62-63
4 3
Trigonometry (II)
Graphs of tan
By the end of the lesson, the learner should be able to:
Draw tables for tan of values
Plot graphs of tan functions
Identify asymptotes and discontinuities
Q/A on tangent behavior
Discussions on function domains
Solving tangent graphing problems
Demonstrations of asymptote identification
Explaining discontinuous functions
Calculators, graph papers, plotting guides
KLB Mathematics Book Three Pg 64-65
4 4
Trigonometry (II)
The sine rule
Cosine rule
By the end of the lesson, the learner should be able to:
State the sine rule
Apply sine rule to find solution of triangles
Solve triangles using sine rule
Q/A on triangle properties
Discussions on sine rule applications
Solving triangle problems
Demonstrations of rule application
Explaining ambiguous case
Calculators, triangle worksheets
KLB Mathematics Book Three Pg 65-70
4 5
Trigonometry (II)
Problem solving
By the end of the lesson, the learner should be able to:
Solve problems on cosines, sines and tan
Apply trigonometry to real-world situations
Integrate all trigonometric concepts
Q/A on chapter consolidation
Discussions on practical applications
Solving comprehensive problems
Demonstrations of problem-solving strategies
Explaining real-world trigonometry
Calculators, comprehensive problem sets, real-world examples
KLB Mathematics Book Three Pg 76-77
4 6
Surds
Rational and irrational numbers
By the end of the lesson, the learner should be able to:
Classify numbers as rational and irrational numbers
Identify rational and irrational numbers
Distinguish between rational and irrational forms
Q/A on number classification concepts
Discussions on rational vs irrational properties
Solving classification problems
Demonstrations of number identification
Explaining decimal representations
Calculators, number classification charts
KLB Mathematics Book Three Pg 78
4 7
Surds
Order of surds and simplification
Simplification of surds practice
By the end of the lesson, the learner should be able to:
State the order of surds
Identify surd orders correctly
Simplify surds to lowest terms
Q/A on surd definition and properties
Discussions on surd order concepts
Solving order identification problems
Demonstrations of surd simplification
Explaining simplification techniques
Calculators, surd order examples
Calculators, factor trees, simplification worksheets
KLB Mathematics Book Three Pg 78-79
4 8
Surds
Addition of surds
By the end of the lesson, the learner should be able to:
Add surds with like terms
Combine surds of the same order
Simplify surd addition expressions
Q/A on like term concepts
Discussions on surd addition rules
Solving addition problems systematically
Demonstrations of combining techniques
Explaining when surds can be added
Calculators, addition rule charts
KLB Mathematics Book Three Pg 79-80
5 1
Surds
Subtraction of surds
Multiplication of surds
By the end of the lesson, the learner should be able to:
Subtract surds with like terms
Apply subtraction rules to surds
Simplify surd subtraction expressions
Q/A on subtraction principles
Discussions on surd subtraction methods
Solving subtraction problems
Demonstrations of systematic approaches
Explaining subtraction verification
Calculators, subtraction worksheets
Calculators, multiplication rule guides
KLB Mathematics Book Three Pg 80
5 2
Surds
Division of surds
By the end of the lesson, the learner should be able to:
Divide surds of the same order
Apply division rules to surds
Simplify quotients of surds
Q/A on division concepts
Discussions on surd division methods
Solving division problems systematically
Demonstrations of quotient simplification
Explaining division techniques
Calculators, division worksheets
KLB Mathematics Book Three Pg 81-82
5 3
Surds
Rationalizing the denominator
By the end of the lesson, the learner should be able to:
Rationalize the denominator of fractions
Apply rationalization techniques
Simplify expressions with surd denominators
Q/A on rationalization concepts
Discussions on denominator clearing
Solving rationalization problems
Demonstrations of conjugate methods
Explaining rationalization importance
Calculators, rationalization guides
KLB Mathematics Book Three Pg 85-87
5 4
Surds
Further Logarithms
Advanced rationalization techniques
Introduction
By the end of the lesson, the learner should be able to:
Rationalize complex expressions
Apply advanced rationalization methods
Handle multiple term denominators
Q/A on complex rationalization
Discussions on advanced techniques
Solving challenging rationalization problems
Demonstrations of sophisticated methods
Explaining complex denominator handling
Calculators, advanced technique sheets
Calculators, logarithm definition charts
KLB Mathematics Book Three Pg 85-87
5 5
Further Logarithms
Laws of logarithms
By the end of the lesson, the learner should be able to:
State the laws of logarithms
Apply basic logarithmic laws
Use logarithm laws for simple calculations
Q/A on logarithmic law foundations
Discussions on multiplication and division laws
Solving problems using basic laws
Demonstrations of law applications
Explaining law derivations
Calculators, logarithm law charts
KLB Mathematics Book Three Pg 90-93
5 6
Further Logarithms
Laws of logarithms
By the end of the lesson, the learner should be able to:
Use laws of logarithms to solve problems
Apply advanced logarithmic laws
Combine multiple laws in calculations
Q/A on law mastery and applications
Discussions on power and root laws
Solving complex law-based problems
Demonstrations of combined law usage
Explaining advanced law techniques
Calculators, advanced law worksheets
Calculators, challenging problem sets
KLB Mathematics Book Three Pg 90-93
5 7
Further Logarithms
Logarithmic equations and expressions
By the end of the lesson, the learner should be able to:
Solve the logarithmic equations and expressions
Apply algebraic methods to logarithmic equations
Verify solutions of logarithmic equations
Q/A on equation-solving techniques
Discussions on logarithmic equation types
Solving basic logarithmic equations
Demonstrations of solution methods
Explaining verification techniques
Calculators, equation-solving guides
KLB Mathematics Book Three Pg 93-95
5 8
Further Logarithms
Logarithmic equations and expressions
Further computation using logarithms
By the end of the lesson, the learner should be able to:
Solve the logarithmic equations and expressions
Handle complex logarithmic equations
Apply advanced solution techniques
Q/A on advanced equation methods
Discussions on complex equation structures
Solving challenging logarithmic equations
Demonstrations of sophisticated techniques
Explaining advanced solution strategies
Calculators, advanced equation worksheets
Calculators, computation worksheets
KLB Mathematics Book Three Pg 93-95
6 1
Further Logarithms
Further computation using logarithms
By the end of the lesson, the learner should be able to:
Solve problems involving logarithms
Apply logarithms to intermediate calculations
Handle multi-step logarithmic computations
Q/A on intermediate computational skills
Discussions on multi-step processes
Solving intermediate computation problems
Demonstrations of systematic approaches
Explaining step-by-step methods
Calculators, intermediate problem sets
KLB Mathematics Book Three Pg 95-96
6 2
Further Logarithms
Further computation using logarithms
By the end of the lesson, the learner should be able to:
Solve problems involving logarithms
Master advanced logarithmic computations
Apply logarithms to complex mathematical scenarios
Q/A on advanced computational mastery
Discussions on complex calculation strategies
Solving advanced computation problems
Demonstrations of sophisticated methods
Explaining optimal computational approaches
Calculators, advanced computation guides
KLB Mathematics Book Three Pg 95-96
6 3
Further Logarithms
Problem solving
By the end of the lesson, the learner should be able to:
Solve problems involving logarithms
Apply logarithms to computational applications
Integrate logarithmic concepts systematically
Q/A on integrated problem-solving
Discussions on application strategies
Solving comprehensive computational problems
Demonstrations of integrated approaches
Explaining systematic problem-solving
Calculators, comprehensive problem sets
Calculators, real-world application examples
KLB Mathematics Book Three Pg 97
6 4
Commercial Arithmetic
Simple interest
By the end of the lesson, the learner should be able to:
Calculate simple interest
Apply simple interest formula
Solve basic interest problems
Q/A on interest concepts and terminology
Discussions on principal, rate, and time
Solving basic simple interest problems
Demonstrations of formula application
Explaining interest calculations
Calculators, simple interest charts
KLB Mathematics Book Three Pg 98-99
6 5
Commercial Arithmetic
Simple interest
Compound interest
By the end of the lesson, the learner should be able to:
Calculate simple interest
Solve complex simple interest problems
Apply simple interest to real-world situations
Q/A on advanced simple interest concepts
Discussions on practical applications
Solving complex interest problems
Demonstrations of real-world scenarios
Explaining business applications
Calculators, real-world problem sets
Calculators, compound interest tables
KLB Mathematics Book Three Pg 98-101
6 6
Commercial Arithmetic
Compound interest
By the end of the lesson, the learner should be able to:
Calculate the compound interest
Solve advanced compound interest problems
Compare simple and compound interest
Q/A on advanced compounding scenarios
Discussions on investment comparisons
Solving complex compound problems
Demonstrations of comparison methods
Explaining investment decisions
Calculators, comparison worksheets
KLB Mathematics Book Three Pg 102-107
6 7
Commercial Arithmetic
Appreciation
By the end of the lesson, the learner should be able to:
Calculate the appreciation value of items
Apply appreciation concepts
Solve appreciation problems
Q/A on appreciation concepts
Discussions on asset value increases
Solving appreciation calculation problems
Demonstrations of value growth
Explaining appreciation applications
Calculators, appreciation examples
KLB Mathematics Book Three Pg 108
6 8
Commercial Arithmetic
Depreciation
Hire purchase
By the end of the lesson, the learner should be able to:
Calculate the depreciation value of items
Apply depreciation methods
Solve depreciation problems
Q/A on depreciation concepts and methods
Discussions on asset value decreases
Solving depreciation calculation problems
Demonstrations of depreciation methods
Explaining business depreciation
Calculators, depreciation charts
Calculators, hire purchase examples
KLB Mathematics Book Three Pg 109
7 1
Commercial Arithmetic
Hire purchase
By the end of the lesson, the learner should be able to:
Find the hire purchase
Solve complex hire purchase problems
Calculate total costs and interest charges
Q/A on advanced hire purchase scenarios
Discussions on complex payment structures
Solving challenging hire purchase problems
Demonstrations of cost analysis
Explaining consumer finance decisions
Calculators, complex hire purchase worksheets
KLB Mathematics Book Three Pg 110-112
7 2
Commercial Arithmetic
Circles: Chords and Tangents
Income tax and P.A.Y.E
Length of an arc
By the end of the lesson, the learner should be able to:
Calculate the income tax
Calculate the P.A.Y.E
Apply tax calculation methods
Q/A on tax system concepts
Discussions on income tax and P.A.Y.E systems
Solving tax calculation problems
Demonstrations of tax computation
Explaining taxation principles
Income tax tables, calculators
Geometrical set, calculators
KLB Mathematics Book Three Pg 112-117
7 3
Circles: Chords and Tangents
Length of an arc
By the end of the lesson, the learner should be able to:
Calculate the length of an arc
Solve complex arc length problems
Apply arc concepts to real situations
Q/A on advanced arc applications
Discussions on practical arc measurements
Solving complex arc problems
Demonstrations of real-world applications
Explaining engineering and design uses
Geometrical set, calculators
KLB Mathematics Book Three Pg 124-125
7 4
Circles: Chords and Tangents
Chords
By the end of the lesson, the learner should be able to:
Calculate the length of a chord
Apply chord properties and theorems
Understand chord-radius relationships
Q/A on chord definition and properties
Discussions on chord calculation methods
Solving basic chord problems
Demonstrations of geometric constructions
Explaining chord theorems
Geometrical set, calculators
KLB Mathematics Book Three Pg 126-128
7 5
Circles: Chords and Tangents
Parallel chords
Equal chords
By the end of the lesson, the learner should be able to:
Calculate the perpendicular bisector
Find the value of parallel chords
Apply parallel chord properties
Q/A on parallel chord concepts
Discussions on perpendicular bisector properties
Solving parallel chord problems
Demonstrations of construction techniques
Explaining geometric relationships
Geometrical set, calculators
KLB Mathematics Book Three Pg 129-131
7 6
Circles: Chords and Tangents
Intersecting chords
By the end of the lesson, the learner should be able to:
Calculate the length of intersecting chords
Apply intersecting chord theorem
Understand chord intersection properties
Q/A on chord intersection concepts
Discussions on intersection theorem
Solving basic intersection problems
Demonstrations of theorem application
Explaining geometric proofs
Geometrical set, calculators
KLB Mathematics Book Three Pg 132-135
7 7
Circles: Chords and Tangents
Intersecting chords
Chord properties
By the end of the lesson, the learner should be able to:
Calculate the length of intersecting chords
Solve complex intersection problems
Apply advanced chord theorems
Q/A on advanced intersection scenarios
Discussions on complex chord relationships
Solving challenging intersection problems
Demonstrations of advanced techniques
Explaining sophisticated applications
Geometrical set, calculators
KLB Mathematics Book Three Pg 135-139
7 8
Circles: Chords and Tangents
Tangent to a circle
By the end of the lesson, the learner should be able to:
Construct a tangent to a circle
Understand tangent properties
Apply tangent construction methods
Q/A on tangent definition and properties
Discussions on tangent construction
Solving basic tangent problems
Demonstrations of construction techniques
Explaining tangent characteristics
Geometrical set, calculators
KLB Mathematics Book Three Pg 139-140
8-9

MID TERM BREAK

9 5
Circles: Chords and Tangents
Tangent to a circle
Properties of tangents to a circle from an external point
By the end of the lesson, the learner should be able to:
Calculate the length of tangent
Calculate the angle between tangents
Apply tangent measurement techniques
Q/A on tangent calculations
Discussions on tangent measurement
Solving tangent calculation problems
Demonstrations of measurement methods
Explaining tangent applications
Geometrical set, calculators
KLB Mathematics Book Three Pg 141-142
9 6
Circles: Chords and Tangents
Tangent properties
By the end of the lesson, the learner should be able to:
Solve comprehensive tangent problems
Apply all tangent concepts
Integrate tangent knowledge systematically
Q/A on comprehensive tangent mastery
Discussions on integrated applications
Solving mixed tangent problems
Demonstrations of complete understanding
Explaining systematic problem-solving
Geometrical set, calculators
KLB Mathematics Book Three Pg 139-147
9 7
Circles: Chords and Tangents
Tangents to two circles
By the end of the lesson, the learner should be able to:
Calculate the tangents of direct common tangents
Find direct common tangent properties
Apply two-circle tangent concepts
Q/A on two-circle tangent concepts
Discussions on direct tangent properties
Solving direct tangent problems
Demonstrations of construction methods
Explaining geometric relationships
Geometrical set, calculators
KLB Mathematics Book Three Pg 148-149
9 8
Circles: Chords and Tangents
Tangents to two circles
Contact of circles
By the end of the lesson, the learner should be able to:
Calculate the tangents of transverse common tangents
Find transverse tangent properties
Compare direct and transverse tangents
Q/A on transverse tangent concepts
Discussions on tangent type differences
Solving transverse tangent problems
Demonstrations of comparison methods
Explaining tangent classifications
Geometrical set, calculators
KLB Mathematics Book Three Pg 150-151
10 1
Circles: Chords and Tangents
Contact of circles
By the end of the lesson, the learner should be able to:
Calculate the radii of contact circles
Understand external contact properties
Compare internal and external contact
Q/A on external contact concepts
Discussions on contact type differences
Solving external contact problems
Demonstrations of contact analysis
Explaining contact applications
Geometrical set, calculators
KLB Mathematics Book Three Pg 153-154
10 2
Circles: Chords and Tangents
Circle contact
Angle in alternate segment
By the end of the lesson, the learner should be able to:
Solve problems involving chords, tangents and contact circles
Integrate all contact concepts
Apply comprehensive contact knowledge
Q/A on comprehensive contact understanding
Discussions on integrated problem-solving
Solving complex contact problems
Demonstrations of systematic approaches
Explaining complete contact mastery
Geometrical set, calculators
KLB Mathematics Book Three Pg 154-157
10 3
Circles: Chords and Tangents
Angle in alternate segment
By the end of the lesson, the learner should be able to:
Calculate the angles in alternate segments
Solve complex segment problems
Apply advanced segment theorems
Q/A on advanced segment applications
Discussions on complex angle relationships
Solving challenging segment problems
Demonstrations of sophisticated techniques
Explaining advanced applications
Geometrical set, calculators
KLB Mathematics Book Three Pg 160-161
10 4
Circles: Chords and Tangents
Circumscribed circle
By the end of the lesson, the learner should be able to:
Construct circumscribed circles
Find circumscribed circle properties
Apply circumscription concepts
Q/A on circumscription concepts
Discussions on circumscribed circle construction
Solving circumscription problems
Demonstrations of construction techniques
Explaining circumscription applications
Geometrical set, calculators
KLB Mathematics Book Three Pg 165
10 5
Circles: Chords and Tangents
Escribed circles
Centroid
By the end of the lesson, the learner should be able to:
Construct escribed circles
Find escribed circle properties
Apply escription concepts
Q/A on escription concepts
Discussions on escribed circle construction
Solving escription problems
Demonstrations of construction methods
Explaining escription applications
Geometrical set, calculators
KLB Mathematics Book Three Pg 165-166
10 6
Circles: Chords and Tangents
Orthocenter
By the end of the lesson, the learner should be able to:
Construct orthocenter
Find orthocenter properties
Apply orthocenter concepts
Q/A on orthocenter concepts
Discussions on orthocenter construction
Solving orthocenter problems
Demonstrations of construction methods
Explaining orthocenter applications
Geometrical set, calculators
KLB Mathematics Book Three Pg 167
10 7
Circles: Chords and Tangents
Matrices
Matrices
Circle and triangle relationships
Introduction and real-life applications
Order of a matrix and elements
By the end of the lesson, the learner should be able to:
Solve comprehensive circle-triangle problems
Integrate all circle and triangle concepts
Apply advanced geometric relationships
Q/A on comprehensive geometric understanding
Discussions on integrated relationships
Solving complex geometric problems
Demonstrations of advanced applications
Explaining sophisticated geometric principles
Geometrical set, calculators
Old newspapers with league tables, chalk and blackboard, exercise books
Chalk and blackboard, ruled exercise books, class register
KLB Mathematics Book Three Pg 164-167
10 8
Matrices
Square matrices, row and column matrices
Addition of matrices
Subtraction of matrices
By the end of the lesson, the learner should be able to:
Classify matrices by their dimensions
Identify square, row, and column matrices
Understand zero and null matrices
Apply matrix equality conditions
Q/A on matrix classification using drawn examples
Discussions on special matrix types using patterns
Solving matrix identification using cutout papers
Demonstrations using classroom objects arrangement
Explaining matrix comparison using simple examples
Paper cutouts, chalk and blackboard, counters or bottle tops
Counters or stones, chalk and blackboard, exercise books
Chalk and blackboard, exercise books, number cards made from cardboard
KLB Mathematics Book Three Pg 169-170
11 1
Matrices
Combined addition and subtraction
Scalar multiplication
Introduction to matrix multiplication
By the end of the lesson, the learner should be able to:
Perform multiple matrix operations
Apply order of operations in matrix calculations
Solve complex combined problems
Demonstrate systematic problem-solving
Q/A on operation order using BODMAS rules
Discussions on complex expressions using step-by-step approach
Solving multi-step problems using organized methods
Demonstrations using systematic blackboard work
Explaining operation sequencing using flowcharts
Chalk and blackboard, exercise books, locally made operation cards
Beans or stones for grouping, chalk and blackboard, exercise books
Chalk and blackboard, rulers for tracing, exercise books
KLB Mathematics Book Three Pg 171-174
11 2
Matrices
Matrix multiplication (2×2 matrices)
By the end of the lesson, the learner should be able to:
Multiply 2×2 matrices systematically
Apply correct multiplication procedures
Calculate matrix products accurately
Understand result matrix dimensions
Q/A on 2×2 matrix multiplication using simple numbers
Discussions on systematic calculation methods
Solving 2×2 problems using step-by-step approach
Demonstrations using organized blackboard layout
Explaining product formation using grid method
Chalk and blackboard, exercise books, homemade grid templates
KLB Mathematics Book Three Pg 176-179
11 3
Matrices
Matrix multiplication (larger matrices)
Properties of matrix multiplication
By the end of the lesson, the learner should be able to:
Multiply matrices of various orders
Apply multiplication to 3×3 and larger matrices
Determine when multiplication is possible
Calculate products efficiently
Q/A on larger matrix multiplication using patterns
Discussions on efficiency techniques using shortcuts
Solving advanced problems using systematic methods
Demonstrations using organized calculation procedures
Explaining general principles using examples
Chalk and blackboard, large sheets of paper for working, exercise books
Chalk and blackboard, exercise books, cardboard for property cards
KLB Mathematics Book Three Pg 176-179
11 4
Matrices
Real-world matrix multiplication applications
By the end of the lesson, the learner should be able to:
Apply matrix multiplication to practical problems
Solve business and economic applications
Calculate costs, revenues, and quantities
Interpret matrix multiplication results
Q/A on practical applications using local business examples
Discussions on market problems using familiar contexts
Solving real-world problems using matrix methods
Demonstrations using shop keeper scenarios
Explaining result interpretation using meaningful contexts
Chalk and blackboard, local price lists, exercise books
KLB Mathematics Book Three Pg 176-179
11 5
Matrices
Identity matrix
Determinant of 2×2 matrices
By the end of the lesson, the learner should be able to:
Define and identify identity matrices
Understand identity matrix properties
Apply identity matrices in multiplication
Recognize the multiplicative identity role
Q/A on identity concepts using number 1 analogy
Discussions on multiplicative identity using examples
Solving identity problems using pattern recognition
Demonstrations using multiplication by 1 concept
Explaining diagonal properties using visual patterns
Chalk and blackboard, exercise books, pattern cards made from paper
Chalk and blackboard, exercise books, crossed sticks for demonstration
KLB Mathematics Book Three Pg 182-183
11 6
Matrices
Inverse of 2×2 matrices - theory
By the end of the lesson, the learner should be able to:
Understand the concept of matrix inverse
Identify conditions for matrix invertibility
Apply the inverse formula for 2×2 matrices
Understand singular matrices
Q/A on inverse concepts using reciprocal analogy
Discussions on invertibility using determinant conditions
Solving basic inverse problems using formula
Demonstrations using step-by-step method
Explaining singular matrices using zero determinant
Chalk and blackboard, exercise books, fraction examples
KLB Mathematics Book Three Pg 183-185
11 7
Matrices
Inverse of 2×2 matrices - practice
Introduction to solving simultaneous equations
By the end of the lesson, the learner should be able to:
Calculate inverses of 2×2 matrices systematically
Verify inverse calculations through multiplication
Apply inverse properties correctly
Solve complex inverse problems
Q/A on inverse calculation verification methods
Discussions on accuracy checking using multiplication
Solving advanced inverse problems using practice
Demonstrations using verification procedures
Explaining checking methods using examples
Chalk and blackboard, exercise books, scrap paper for verification
Chalk and blackboard, exercise books, equation examples from previous topics
KLB Mathematics Book Three Pg 185-187
11 8
Matrices
Solving 2×2 simultaneous equations using matrices
By the end of the lesson, the learner should be able to:
Solve 2×2 simultaneous equations using matrix methods
Apply inverse matrix techniques
Verify solutions by substitution
Compare matrix method with other techniques
Q/A on matrix solution methods using step-by-step approach
Discussions on solution verification using substitution
Solving 2×2 systems using complete method
Demonstrations using organized solution process
Explaining method advantages using comparisons
Chalk and blackboard, exercise books, previous elimination method examples
KLB Mathematics Book Three Pg 188-190
12-13

END TERM EXAMS AND CLOSING

13 2
Matrices
Advanced simultaneous equation problems
By the end of the lesson, the learner should be able to:
Solve complex simultaneous equation systems
Handle systems with no solution or infinite solutions
Interpret determinant values in solution context
Apply matrix methods to word problems
Q/A on complex systems using special cases
Discussions on solution types using geometric interpretation
Solving challenging problems using complete analysis
Demonstrations using classification methods
Explaining geometric meaning using line concepts
Chalk and blackboard, exercise books, graph paper if available
KLB Mathematics Book Three Pg 188-190
13 3
Matrices
Matrix applications in real-world problems
Transpose of matrices
By the end of the lesson, the learner should be able to:
Apply matrix operations to practical scenarios
Solve business, engineering, and scientific problems
Model real situations using matrices
Interpret matrix solutions in context
Q/A on practical applications using local examples
Discussions on modeling using familiar situations
Solving comprehensive problems using matrix tools
Demonstrations using community-based scenarios
Explaining solution interpretation using meaningful contexts
Chalk and blackboard, local business examples, exercise books
Chalk and blackboard, exercise books, paper cutouts for demonstration
KLB Mathematics Book Three Pg 168-190
13 4
Matrices
Matrix equation solving
By the end of the lesson, the learner should be able to:
Solve matrix equations systematically
Find unknown matrices in equations
Apply inverse operations to solve equations
Verify matrix equation solutions
Q/A on equation solving using algebraic analogy
Discussions on unknown determination using systematic methods
Solving matrix equations using step-by-step approach
Demonstrations using organized solution procedures
Explaining verification using checking methods
Chalk and blackboard, exercise books, algebra reference examples
KLB Mathematics Book Three Pg 183-190

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