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SCHEME OF WORK
Mathematics
Form 3 2025
TERM III
School


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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
1

Reporting and revision of end of term 2 exam

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
Estimation
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
Calculators, estimation guides
KLB Mathematics Book Three Pg 29-30
2 3
Approximations and Errors
Accuracy and errors
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
KLB Mathematics Book Three Pg 31-32
2 4
Approximations and Errors
Percentage error
Rounding off error and truncation error
By the end of the lesson, the learner should be able to:
Find the percentage error of a given value
Calculate percentage error accurately
Interpret percentage error results
Q/A on percentage concepts
Discussions on percentage error meaning
Solving percentage error problems
Demonstrations of percentage calculations
Explaining error interpretation
Calculators, percentage error worksheets
Calculators, error comparison charts
KLB Mathematics Book Three Pg 32-34
2 5
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 6
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 7
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
Trigonometry (II)
Word problems
The unit circle
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
Calculators, protractors, rulers, pair of compasses
KLB Mathematics Book Three Pg 39-40
3 3
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
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
Geoboards, graph books, calculators
KLB Mathematics Book Three Pg 44-45
3 4
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 5
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 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
Calculators, function guides
KLB Mathematics Book Three Pg 51-55
3 6
Trigonometry (II)
Radian measure
Simple trigonometric graphs
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
Calculators, graph papers, plotting guides
KLB Mathematics Book Three Pg 58-61
3 7
Trigonometry (II)
Graphs of cosines
By the end of the lesson, the learner should be able to:
Draw tables for cosine of values
Plot graphs of cosine functions
Compare sine and cosine graphs
Q/A on cosine properties
Discussions on graph relationships
Solving cosine graphing problems
Demonstrations of cosine plotting
Explaining phase relationships
Calculators, graph papers, plotting guides
KLB Mathematics Book Three Pg 63-64
4 1
Trigonometry (II)
Graphs of tan
The sine rule
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
Calculators, triangle worksheets
KLB Mathematics Book Three Pg 64-65
4 2
Trigonometry (II)
Cosine rule
Problem solving
By the end of the lesson, the learner should be able to:
State the cosine rule
Apply cosine rule to find solution of triangles
Choose appropriate rule for triangle solving
Q/A on cosine rule concepts
Discussions on rule selection
Solving complex triangle problems
Demonstrations of cosine rule
Explaining when to use each rule
Calculators, triangle worksheets
Calculators, comprehensive problem sets, real-world examples
KLB Mathematics Book Three Pg 71-75
4 3
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
4 4
Commercial Arithmetic
Compound interest
Appreciation
By the end of the lesson, the learner should be able to:
Calculate the compound interest
Apply compound interest formula
Understand compounding concepts
Q/A on compound interest principles
Discussions on compounding frequency
Solving basic compound interest problems
Demonstrations of compound calculations
Explaining compounding effects
Calculators, compound interest tables
Calculators, appreciation examples
KLB Mathematics Book Three Pg 102-106
4 5
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
4 6
Commercial Arithmetic
Income tax and P.A.Y.E
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
KLB Mathematics Book Three Pg 112-117
4 7
Circles: Chords and Tangents
Length of an arc
Chords
By the end of the lesson, the learner should be able to:
Calculate the length of an arc
Apply arc length formula
Understand arc-radius relationships
Q/A on circle properties and terminology
Discussions on arc measurement concepts
Solving basic arc length problems
Demonstrations of formula application
Explaining arc-angle relationships
Geometrical set, calculators
KLB Mathematics Book Three Pg 124-125
5 1
Circles: Chords and Tangents
Parallel 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
5 2
Circles: Chords and Tangents
Equal chords
Intersecting chords
By the end of the lesson, the learner should be able to:
Find the length of equal chords
Apply equal chord theorems
Solve equal chord problems
Q/A on equal chord properties
Discussions on chord equality conditions
Solving equal chord problems
Demonstrations of proof techniques
Explaining theoretical foundations
Geometrical set, calculators
KLB Mathematics Book Three Pg 131-132
5 3
Circles: Chords and Tangents
Chord properties
Tangent to a circle
By the end of the lesson, the learner should be able to:
Solve comprehensive chord problems
Integrate all chord concepts
Apply chord knowledge systematically
Q/A on comprehensive chord understanding
Discussions on integrated problem-solving
Solving mixed chord problems
Demonstrations of systematic approaches
Explaining complete chord mastery
Geometrical set, calculators
KLB Mathematics Book Three Pg 126-139
5 4
Circles: Chords and Tangents
Tangent to a circle
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
5 5
Circles: Chords and Tangents
Properties of tangents to a circle from an external point
Tangent properties
By the end of the lesson, the learner should be able to:
State the properties of tangents to a circle from an external point
Apply external tangent properties
Solve external tangent problems
Q/A on external tangent concepts
Discussions on tangent properties
Solving external tangent problems
Demonstrations of property applications
Explaining theoretical foundations
Geometrical set, calculators
KLB Mathematics Book Three Pg 142-144
5 6
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 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
5 7
Circles: Chords and Tangents
Circle contact
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
6 1
Circles: Chords and Tangents
Angle in alternate segment
Circumscribed circle
By the end of the lesson, the learner should be able to:
Calculate the angles in alternate segments
Apply alternate segment theorem
Understand segment angle properties
Q/A on alternate segment concepts
Discussions on segment angle relationships
Solving basic segment problems
Demonstrations of theorem application
Explaining geometric proofs
Geometrical set, calculators
KLB Mathematics Book Three Pg 157-160
6 2
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
6 3
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
6 4
Circles: Chords and Tangents
Formulae and Variations
Circle and triangle relationships
Introduction to formulae
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
Chalk and blackboard, measuring tape or string, exercise books
KLB Mathematics Book Three Pg 164-167
6 5
Formulae and Variations
Subject of a formula - basic cases
Subject of a formula - intermediate cases
By the end of the lesson, the learner should be able to:
Make simple variables the subject of formulae
Apply inverse operations to rearrange formulae
Understand the concept of subject change
Solve basic subject transformation problems
Q/A on inverse operations using number examples
Discussions on formula rearrangement using balance method
Solving basic subject change problems using step-by-step approach
Demonstrations using see-saw balance analogy
Explaining inverse operations using practical examples
Chalk and blackboard, simple balance (stones and stick), exercise books
Chalk and blackboard, fraction strips made from paper, exercise books
KLB Mathematics Book Three Pg 191-193
6 6
Formulae and Variations
Subject of a formula - advanced cases
By the end of the lesson, the learner should be able to:
Make variables subject in complex formulae
Handle square roots and quadratic expressions
Apply advanced algebraic manipulation
Solve challenging subject transformation problems
Q/A on advanced manipulation using careful steps
Discussions on square root handling using examples
Solving complex problems using systematic approach
Demonstrations using detailed blackboard work
Explaining quadratic handling using factoring
Chalk and blackboard, squared paper patterns, exercise books
KLB Mathematics Book Three Pg 191-193
6 7
Formulae and Variations
Applications of formula manipulation
Introduction to variation
By the end of the lesson, the learner should be able to:
Apply formula rearrangement to practical problems
Solve real-world problems using formula manipulation
Calculate unknown quantities in various contexts
Interpret results in meaningful situations
Q/A on practical applications using local examples
Discussions on real-world formula use in farming/building
Solving application problems using formula rearrangement
Demonstrations using construction and farming scenarios
Explaining practical interpretation using community examples
Chalk and blackboard, local measurement tools, exercise books
Chalk and blackboard, local price lists from markets, exercise books
KLB Mathematics Book Three Pg 191-193
7 1
Formulae and Variations
Direct variation - introduction
By the end of the lesson, the learner should be able to:
Understand direct proportionality concepts
Recognize direct variation patterns
Use direct variation notation correctly
Calculate constants of proportionality
Q/A on direct relationships using simple examples
Discussions on proportional changes using market scenarios
Solving basic direct variation problems
Demonstrations using doubling and tripling examples
Explaining proportionality using ratio concepts
Chalk and blackboard, beans or stones for counting, exercise books
KLB Mathematics Book Three Pg 194-196
7 2
Sequences and Series
Introduction to sequences and finding terms
General term of sequences and applications
By the end of the lesson, the learner should be able to:
Define sequences and identify sequence patterns
Find next terms using established patterns
Recognize different types of sequence patterns
Apply pattern recognition systematically
Q/A on number patterns from daily life
Discussions on counting patterns using classroom arrangements
Solving pattern completion problems step-by-step
Demonstrations using bead or stone arrangements
Explaining sequence terminology and pattern continuation
Chalk and blackboard, stones or beans for patterns, exercise books
Chalk and blackboard, numbered cards made from paper, exercise books
KLB Mathematics Book Three Pg 207-208
7 3
Sequences and Series
Arithmetic sequences and nth term
Arithmetic sequence applications
By the end of the lesson, the learner should be able to:
Define arithmetic sequences and common differences
Calculate common differences correctly
Derive and apply the nth term formula
Solve problems using arithmetic sequence concepts
Q/A on arithmetic patterns using step-by-step examples
Discussions on constant difference patterns and formula derivation
Solving arithmetic sequence problems systematically
Demonstrations using equal-step progressions
Explaining formula structure using algebraic reasoning
Chalk and blackboard, measuring tape or string, exercise books
Chalk and blackboard, local employment/savings examples, exercise books
KLB Mathematics Book Three Pg 209-210
7 4
Sequences and Series
Geometric sequences and nth term
By the end of the lesson, the learner should be able to:
Define geometric sequences and common ratios
Calculate common ratios correctly
Derive and apply the geometric nth term formula
Understand exponential growth patterns
Q/A on geometric patterns using multiplication examples
Discussions on ratio-based progressions and formula derivation
Solving geometric sequence problems systematically
Demonstrations using doubling and scaling examples
Explaining exponential structure using practical examples
Chalk and blackboard, objects for doubling demonstrations, exercise books
KLB Mathematics Book Three Pg 211-213
7 5
Sequences and Series
Geometric sequence applications
Arithmetic series and sum formula
By the end of the lesson, the learner should be able to:
Solve complex geometric sequence problems
Apply geometric sequences to real-world problems
Handle population growth and depreciation problems
Model exponential patterns using sequences
Q/A on practical applications using population/growth examples
Discussions on exponential growth in nature and economics
Solving real-world problems using geometric methods
Demonstrations using population and business scenarios
Explaining practical interpretation using meaningful contexts
Chalk and blackboard, population/growth data examples, exercise books
Chalk and blackboard, counting materials for summation, exercise books
KLB Mathematics Book Three Pg 211-213
7 6
Sequences and Series
Geometric series and applications
Mixed problems and advanced applications
By the end of the lesson, the learner should be able to:
Define geometric series and understand convergence
Derive and apply geometric series formulas
Handle finite and infinite geometric series
Apply geometric series to practical situations
Q/A on geometric series concepts using multiplication examples
Discussions on convergence and formula applications
Solving geometric series problems including infinite cases
Demonstrations using geometric sum patterns
Explaining convergence using practical examples
Chalk and blackboard, convergence demonstration materials, exercise books
Chalk and blackboard, mixed problem collections, exercise books
KLB Mathematics Book Three Pg 216-219
7 7
Sequences and Series
Sequences in nature and technology
By the end of the lesson, the learner should be able to:
Identify mathematical patterns in natural phenomena
Analyze sequences in biological and technological contexts
Apply sequence concepts to environmental problems
Appreciate mathematics in the natural and modern world
Q/A on natural and technological patterns using examples
Discussions on biological sequences and digital applications
Solving nature and technology-based problems
Demonstrations using natural pattern examples
Explaining mathematical beauty using real phenomena
Chalk and blackboard, natural and technology examples, exercise books
KLB Mathematics Book Three Pg 207-219
8

End term exam


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