Numbers

Integers - Identifying integers in different situations

By the end of the lesson, the learner should be able to:
-Identify integers in different situations
-Use integers correctly in daily life
-Show interest in learning about integers

-Identify integers by carrying out activities involving positive and negative numbers and zero
-Make steps forward (positive) and backward (negative) from a reference point
-Mark a reference point on level ground and make five steps from the reference point in both directions

How small are atoms and are they divisible?

-KLB Grade 8 Mathematics pg. 1
-Number line charts
-Digital resources

-Observation -Oral questions -Written assignments

Numbers

Integers - Representing integers on a number line

By the end of the lesson, the learner should be able to:

-Represent integers on a number line
-Interpret positive and negative values correctly
-Appreciate the use of number line in representing integers

-Draw and represent integers on number lines
-Consider moving forward as positive and backward as negative
-Represent given integers on a number line and share with other groups

Where do we use integers in real life situations?

-KLB Grade 8 Mathematics pg. 1
-Number lines
-Digital resources

-Observation -Oral questions -Written tests

Numbers

Integers - Addition of integers on a number line
Integers - Subtraction of integers on a number line

By the end of the lesson, the learner should be able to:

-Add integers using a number line
-Solve problems involving addition of integers
-Show interest in using number line for addition of integers

-Perform addition operations of integers on a number line
-Starting at a point on a number line, move steps in the appropriate direction
-Practice addition of integers using number line

How do we carry out operations of integers?

-KLB Grade 8 Mathematics pg. 3
-Number lines
-Digital resources
-KLB Grade 8 Mathematics pg. 4
-Charts showing number lines

-Observation -Oral questions -Written assignments

Numbers

Integers - Combined operations of integers on a number line

By the end of the lesson, the learner should be able to:

-Perform combined operations of integers on a number line
-Solve real-life problems involving combined operations of integers
-Value the importance of combined operations

-Perform combined operations of integers on a number line
-Starting at a point, move steps in appropriate directions for each operation
-Solve problems involving combined operations

How do we carry out combined operations of integers?

-KLB Grade 8 Mathematics pg. 6
-Number lines
-Digital resources

-Observation -Oral questions -Written assignments

Numbers

Integers - Games involving a number line

By the end of the lesson, the learner should be able to:

-Play creative games involving integer operations
-Create games using a number line
-Show interest in learning more about integers

-Play creative games that involve number lines, for example jumping steps
-Each member to write a question on a card involving addition and subtraction of integers
-Use IT to learn more on operations of integers on number lines

Where do we use integers in real life situations?

-KLB Grade 8 Mathematics pg. 7
-Number cards
-Internet access

-Observation -Oral questions -Written tests

Numbers

Fractions - Combined operations involving addition and subtraction

By the end of the lesson, the learner should be able to:

-Carry out combined operations involving addition and subtraction of fractions
-Apply combined operations in real-life situations
-Show interest in learning about fractions

-Discuss and use the correct order of operations in fractions
-Work out combined operations involving addition and subtraction
-Add fractions then subtract from the sum

How do we use fractions in real life situations?

-KLB Grade 8 Mathematics pg. 8
-Fraction models
-Digital resources

-Observation -Oral questions -Written assignments

Numbers

Fractions - Combined operations involving division and multiplication

By the end of the lesson, the learner should be able to:

-Carry out combined operations involving division and multiplication of fractions
-Apply combined operations in solving problems
-Appreciate the importance of combined operations

-Discuss and use the correct order of operations in fractions
-Work out division, then multiplication in combined operations
-Solve real-life problems involving fractions

How do we carry out combined operations on fractions?

-KLB Grade 8 Mathematics pg. 11
-Fraction models
-Digital resources

-Observation -Oral questions -Written tests

Numbers

Fractions - Combined operations involving brackets

By the end of the lesson, the learner should be able to:

-Carry out combined operations involving brackets
-Apply BODMAS rule in combined operations
-Show interest in learning about combined operations

-Discuss and use the correct order of operations in fractions
-Work out brackets first in combined operations
-Solve real-life problems involving brackets

How do we apply BODMAS rule in combined operations?

-KLB Grade 8 Mathematics pg. 13
-Fraction models
-Digital resources

-Observation -Oral questions -Written assignments

Numbers

Fractions - Operations on fractions in real-life situations
Fractions - Using IT devices for learning fractions

By the end of the lesson, the learner should be able to:

-Work out operations on fractions in real-life situations
-Apply fractions in solving problems
-Appreciate the use of fractions in daily life

-Discuss and carry out operations on fractions from activities such as shopping
-Solve real-life problems involving fractions
-Apply fractions in real-life situations

How do we use fractions in real life situations?

-KLB Grade 8 Mathematics pg. 14
-Fraction models
-Digital resources
-Internet access

-Observation -Oral questions -Written tests

Numbers

Fractions - Consolidation and assessment

By the end of the lesson, the learner should be able to:

-Solve various problems involving fractions
-Apply fractions in real-life situations
-Appreciate the importance of fractions

-Review combined operations on fractions
-Solve a variety of problems involving fractions
-Apply fractions in real-life contexts

How do we use fractions in real life situations?

-KLB Grade 8 Mathematics pg. 14
-Fraction models
-Assessment tools

-Written tests -Problem-solving tasks -Self-assessment

Numbers

Decimals - Conversion of fractions to decimals

By the end of the lesson, the learner should be able to:

-Convert fractions to decimals
-Apply conversion in real-life situations
-Show interest in converting fractions to decimals

-Practice converting fractions to decimals
-Write equivalent fractions with denominator in the form 10ⁿ
-Divide numerator by denominator to obtain decimal form

How do we work out operations on decimals?

-KLB Grade 8 Mathematics pg. 14
-Decimal charts
-Digital resources

-Observation -Oral questions -Written assignments

Numbers

Decimals - Identifying recurring decimals

By the end of the lesson, the learner should be able to:

-Identify recurring decimals
-Represent recurring decimals correctly
-Show interest in learning about recurring decimals

-In groups discuss and classify non-recurring and recurring decimals
-Indicate the recurring digits using appropriate notation
-Convert fractions to decimals and identify recurring patterns

How do we identify recurring decimals?

-KLB Grade 8 Mathematics pg. 17
-Decimal charts
-Digital resources

-Observation -Oral questions -Written tests

Numbers

Decimals - Converting recurring decimals to fractions

By the end of the lesson, the learner should be able to:

-Convert recurring decimals to fractions
-Apply algebraic methods in conversion
-Value the relationship between fractions and decimals

-Practice converting recurring decimals to fractions
-Use algebraic methods to convert recurring decimals to fractions
-Solve problems involving recurring decimals

How do we convert recurring decimals to fractions?

-KLB Grade 8 Mathematics pg. 19
-Conversion charts
-Digital resources

-Observation -Oral questions -Written assignments

Numbers

Decimals - Rounding off decimal numbers
Decimals - Expressing numbers to significant figures

By the end of the lesson, the learner should be able to:

-Round off decimal numbers to required decimal places
-Apply rounding in real-life contexts
-Show interest in rounding decimal numbers

-Discuss and round off decimal numbers to a required number of decimal places
-Apply rounding rules correctly
-Solve problems involving rounding of decimals

How do we round off decimal numbers?

-KLB Grade 8 Mathematics pg. 20
-Decimal charts
-Digital resources
-KLB Grade 8 Mathematics pg. 21
-Number charts

-Observation -Oral questions -Written tests

Numbers

Decimals - Expressing numbers in standard form

By the end of the lesson, the learner should be able to:

-Express numbers in standard form
-Apply standard form in scientific notation
-Show interest in learning about standard form

-Write numbers in standard form in learning materials
-Express numbers as a product of a number between 1 and 10, and a power of 10
-Solve problems involving standard form

How do we express numbers in standard form?

-KLB Grade 8 Mathematics pg. 23
-Number charts
-Digital resources

-Observation -Oral questions -Written tests

Numbers

Decimals - Combined operations on decimals

By the end of the lesson, the learner should be able to:

-Carry out combined operations on decimals
-Apply the correct order of operations
-Value the importance of accurate calculations

-Work out combined operations on decimals in the correct order
-Apply BODMAS rule in decimal operations
-Solve real-life problems involving decimal operations

How do we use decimals in real life situations?

-KLB Grade 8 Mathematics pg. 23
-Decimal charts
-Digital resources

-Observation -Oral questions -Written assignments

Numbers

Decimals - Applications of decimals in real life

By the end of the lesson, the learner should be able to:

-Apply decimals in real-life situations
-Solve problems involving decimals
-Show interest in using decimals in daily life

-Discuss and apply decimals to real-life cases
-Play games of operations on decimals using IT
-Solve real-world problems involving decimals

How do we use decimals in real life situations?

-KLB Grade 8 Mathematics pg. 25
-Real-life objects
-Digital resources

-Observation -Oral questions -Problem-solving tasks

Numbers

Squares and Square Roots - Working out squares from tables

By the end of the lesson, the learner should be able to:

-Work out squares of numbers from tables
-Apply squares in real-life situations
-Show interest in working with squared numbers

-Read and write the squares of numbers from tables
-Use table of squares to find squares of numbers
-Apply squares in solving real-life problems

What are squares and square roots of numbers?

-KLB Grade 8 Mathematics pg. 25
-Table of squares
-Digital resources

-Observation -Oral questions -Written assignments

Numbers

Squares and Square Roots - Squares of numbers greater than ten

By the end of the lesson, the learner should be able to:

-Work out squares of numbers greater than ten
-Use standard form in finding squares
-Appreciate the relationship between standard form and squares

-Use standard form to find squares of large numbers
-Find squares of numbers between zero and one
-Apply squares in solving real-life problems

How do we find squares of large numbers?

-KLB Grade 8 Mathematics pg. 29
-Table of squares
-Digital resources

-Observation -Oral questions -Written tests

Numbers

Squares and Square Roots - Working out square roots from tables
Squares and Square Roots - Square roots of numbers greater than 100

By the end of the lesson, the learner should be able to:

-Work out square roots of numbers from tables
-Apply square roots in problem-solving
-Show interest in working with square roots

-Read and write the square roots of numbers from tables
-Use table of square roots to find square roots
-Apply square roots in solving real-life problems

Where do we apply squares and square roots in real life situations?

-KLB Grade 8 Mathematics pg. 31
-Table of square roots
-Digital resources
-KLB Grade 8 Mathematics pg. 33

-Observation -Oral questions -Written assignments

Numbers

Squares and Square Roots - Using a calculator for squares

By the end of the lesson, the learner should be able to:

-Work out squares of numbers using a calculator
-Apply calculator skills effectively
-Show interest in using calculators in mathematics

-Practice working out squares using a calculator
-Compare results from calculator with table values
-Solve real-life problems involving squares

How do we use calculators to find squares?

-KLB Grade 8 Mathematics pg. 35
-Calculators
-Digital resources

-Observation -Oral questions -Calculator activities

Numbers

Squares and Square Roots - Using a calculator for square roots

By the end of the lesson, the learner should be able to:

-Work out square roots of numbers using a calculator
-Apply calculator skills effectively
-Appreciate technology in mathematical calculations

-Practice working out square roots using a calculator
-Compare results from calculator with table values
-Solve real-life problems involving square roots

How do we use calculators to find square roots?

-KLB Grade 8 Mathematics pg. 36
-Calculators
-Digital resources

-Observation -Oral questions -Written tests

Numbers

Rates, Ratios, Proportion and Percentages - Identifying rates

By the end of the lesson, the learner should be able to:

-Identify rates in different situations
-Recognize rates as quotients of different units
-Show interest in learning about rates

-Using a mobile phone, note the amount of airtime available
-Make calls and check the airtime used
-Compare different call rates from service providers

How do we use rates in real life situations?

-KLB Grade 8 Mathematics pg. 36
-Mobile phones (if available)
-Rate charts

-Observation -Oral questions -Written assignments

Numbers

Rates, Ratios, Proportion and Percentages - Working out rates

By the end of the lesson, the learner should be able to:

-Work out rates in real life situations
-Apply rates in problem-solving
-Value the importance of rates in daily life

-Find cost per unit for various items
-Calculate rates for different quantities
-Solve real-life problems involving rates

How do we calculate rates?

-KLB Grade 8 Mathematics pg. 37
-Rate charts
-Digital resources

-Observation -Oral questions -Written tests

Numbers

Rates, Ratios, Proportion and Percentages - Expressing fractions as ratios

By the end of the lesson, the learner should be able to:

-Express fractions as ratios in real life situations
-Convert between fractions and ratios
-Show interest in the relationship between fractions and ratios

-Use cut-outs to relate fractions to ratios
-Express fractions in the form a:b
-Solve problems involving conversion between fractions and ratios

How do we use ratios in daily activities?

-KLB Grade 8 Mathematics pg. 39
-Fraction models
-Digital resources

-Observation -Oral questions -Written assignments

Numbers

Rates, Ratios, Proportion and Percentages - Comparing two ratios
Rates, Ratios, Proportion and Percentages - Comparing three ratios

By the end of the lesson, the learner should be able to:

-Compare two ratios in different situations
-Determine which ratio is greater
-Appreciate the importance of comparing ratios

-Use strips of paper to compare ratios
-Express ratios as fractions with common denominators
-Compare numerators to determine the greater ratio

How do we compare ratios?

-KLB Grade 8 Mathematics pg. 41
-Paper strips
-Digital resources
-KLB Grade 8 Mathematics pg. 43
-Ratio charts

-Observation -Oral questions -Written tests

Numbers

Rates, Ratios, Proportion and Percentages - Dividing quantities in given ratios

By the end of the lesson, the learner should be able to:

-Divide quantities in given ratios
-Apply ratio division in real-life situations
-Value fair division of resources

-Discuss and share quantities of concrete objects in different ratios
-Divide a quantity into parts proportional to the ratio
-Solve real-life problems involving division in a ratio

How do we divide quantities in a given ratio?

-KLB Grade 8 Mathematics pg. 46
-Concrete objects
-Digital resources

-Observation -Oral questions -Written tests

Numbers

Rates, Ratios, Proportion and Percentages - Working out ratios

By the end of the lesson, the learner should be able to:

-Work out ratios in different situations
-Find the ratio between two quantities
-Show interest in expressing quantities as ratios

-Find the ratio between two given quantities
-Express quantities in simplest ratio form
-Solve problems involving ratios

How do we express quantities as ratios?

-KLB Grade 8 Mathematics pg. 48
-Ratio charts
-Digital resources

-Observation -Oral questions -Written assignments

Numbers

Rates, Ratios, Proportion and Percentages - Ratio increase

By the end of the lesson, the learner should be able to:

-Work out increase of quantities using ratios
-Apply ratio increase in real-life situations
-Value the importance of ratios in quantity changes

-Increase quantities in given ratios
-Find quantities after ratio increases
-Solve real-life problems involving ratio increases

How do we use ratios to increase quantities?

-KLB Grade 8 Mathematics pg. 50
-Ratio charts
-Digital resources

-Observation -Oral questions -Written tests

Numbers

Rates, Ratios, Proportion and Percentages - Ratio decrease

By the end of the lesson, the learner should be able to:

-Work out decrease of quantities using ratios
-Apply ratio decrease in real-life situations
-Show interest in ratio applications

-Decrease quantities in given ratios
-Find quantities after ratio decreases
-Solve real-life problems involving ratio decreases

How do we use ratios to decrease quantities?

-KLB Grade 8 Mathematics pg. 51
-Ratio charts
-Digital resources

-Observation -Oral questions -Written assignments

Numbers

Rates, Ratios, Proportion and Percentages - Percentage change
Rates, Ratios, Proportion and Percentages - Direct proportion

By the end of the lesson, the learner should be able to:

-Work out percentage change of given quantities
-Calculate percentage increase and decrease
-Appreciate percentage change in real-life contexts

-Discuss and determine percentage increase and decrease
-Calculate percentage change using formulas
-Solve real-life problems involving percentage change

How do we calculate percentage change?

-KLB Grade 8 Mathematics pg. 52
-Percentage charts
-Digital resources
-KLB Grade 8 Mathematics pg. 53
-Proportion charts

-Observation -Oral questions -Written tests

Numbers

Rates, Ratios, Proportion and Percentages - Working out direct proportions

By the end of the lesson, the learner should be able to:

-Work out direct proportions in real life situations
-Apply direct proportion in problem-solving
-Value the importance of direct proportion

-Complete tables of directly proportional quantities
-Calculate unknown values using direct proportion
-Solve real-life problems involving direct proportion

How do we calculate using direct proportion?

-KLB Grade 8 Mathematics pg. 54
-Proportion charts
-Digital resources

-Observation -Oral questions -Written tests

Numbers

Rates, Ratios, Proportion and Percentages - Indirect proportion

By the end of the lesson, the learner should be able to:

-Identify indirect proportions in real life situations
-Recognize when products of quantities remain constant
-Show interest in inverse relationships

-Use hourglass to show indirect relationships
-Identify when one quantity increases as another decreases
-Create tables of indirectly proportional quantities

How do we identify indirect proportion?

-KLB Grade 8 Mathematics pg. 54
-Hourglass (if available)
-Digital resources

-Observation -Oral questions -Written assignments

Numbers

Rates, Ratios, Proportion and Percentages - Working out indirect proportions

By the end of the lesson, the learner should be able to:

-Work out indirect proportions in real life situations
-Apply indirect proportion in problem-solving
-Appreciate the concept of inverse relationship

-Complete tables of indirectly proportional quantities
-Calculate unknown values using indirect proportion
-Solve real-life problems involving indirect proportion

How do we calculate using indirect proportion?

-KLB Grade 8 Mathematics pg. 55
-Proportion charts
-Digital resources

-Observation -Oral questions -Written tests

Algebra

Algebraic Expressions - Factorization of algebraic expressions

By the end of the lesson, the learner should be able to:

-Identify like terms in algebraic expressions
-Find the highest common factor of terms in expressions
-Show interest in learning algebraic expressions

-Discuss and identify like and unlike terms in expressions
-Find the highest common factor of terms in algebraic expressions
-Write algebraic expressions for real-life situations

How do we factorize algebraic expressions?

-KLB Grade 8 Mathematics pg. 56
-Algebra tiles
-Digital resources

-Observation -Oral questions -Written assignments

Algebra

Algebraic Expressions - Factorization using the HCF

By the end of the lesson, the learner should be able to:

-Factorize algebraic expressions using the HCF
-Express algebraic expressions as a product of factors
-Value the importance of factorization

-Write expressions as a product of the highest common factor and the other factor
-Practice factorizing different algebraic expressions
-Use factorization to solve problems

How do we factorize algebraic expressions?

-KLB Grade 8 Mathematics pg. 57
-Algebra tiles
-Digital resources

-Observation -Oral questions -Written tests

Algebra

Algebraic Expressions - Addition and subtraction of algebraic fractions
Algebraic Expressions - Simplification of algebraic fractions by factorization

By the end of the lesson, the learner should be able to:

-Add algebraic fractions
-Subtract algebraic fractions
-Show interest in working with algebraic fractions

-Discuss and use the correct methods to add algebraic fractions
-Find the LCM of denominators in algebraic fractions
-Practice addition and subtraction of algebraic fractions

How do we simplify algebraic expressions?

-KLB Grade 8 Mathematics pg. 58
-Algebra charts
-Digital resources
-KLB Grade 8 Mathematics pg. 59

-Observation -Oral questions -Written assignments

Algebra

Algebraic Expressions - Evaluating algebraic expressions

By the end of the lesson, the learner should be able to:

-Evaluate algebraic expressions by substituting values
-Apply substitution to solve problems
-Show interest in evaluating expressions

-Discuss how to substitute given numerical values in expressions
-Practice evaluating expressions with given values
-Apply substitution to real-life situations

How do we evaluate algebraic expressions?

-KLB Grade 8 Mathematics pg. 60
-Algebra charts
-Digital resources

-Observation -Oral questions -Written assignments

Algebra

Algebraic Expressions - Applications of algebraic expressions

By the end of the lesson, the learner should be able to:

-Apply algebraic expressions in real-life situations
-Form expressions from word problems
-Value the importance of algebraic expressions

-Form algebraic expressions from real-life situations
-Evaluate expressions for given values
-Use IT to practice algebraic expressions

How do we apply algebraic expressions in real life?

-KLB Grade 8 Mathematics pg. 61
-Digital resources
-Internet access

-Observation -Oral questions -Written tests

Algebra

Linear Equations - Forming linear equations in two unknowns

By the end of the lesson, the learner should be able to:

-Form linear equations in two unknowns
-Translate word problems into equations
-Show interest in linear equations

-Role play activities such as shopping on two different items to form linear equations
-Represent price of items using letters
-Form equations from real-life situations

How do we solve linear equations in two unknowns?

-KLB Grade 8 Mathematics pg. 62
-Shop setup materials
-Digital resources

-Observation -Oral questions -Written assignments

Algebra

Linear Equations - Forming related linear equations

By the end of the lesson, the learner should be able to:

-Form related linear equations in two unknowns
-Create simultaneous equations from real-life situations
-Value the use of equations in problem-solving

-Set up a demonstration shop with two different improvised items
-Relate amounts spent to total amounts
-Form simultaneous equations from given scenarios

Where do we use linear equations in two unknowns in real life situations?

-KLB Grade 8 Mathematics pg. 64
-Shop setup materials
-Digital resources

-Observation -Oral questions -Written tests

Algebra

Linear Equations - Solving linear equations by substitution method

By the end of the lesson, the learner should be able to:

-Solve linear equations using substitution method
-Apply the method to solve simultaneous equations
-Show interest in using substitution method

-Express one unknown in terms of the other
-Substitute the expression in the other equation
-Practice solving equations using substitution method

How do we solve linear equations in two unknowns?

-KLB Grade 8 Mathematics pg. 66
-Equation charts
-Digital resources

-Observation -Oral questions -Written assignments

Algebra

Linear Equations - More on substitution method
Linear Equations - Solving linear equations by elimination method

By the end of the lesson, the learner should be able to:

-Apply substitution method to various equations
-Solve complex simultaneous equations
-Appreciate the substitution method

-Solve different types of linear equations using substitution
-Apply substitution method to practical problems
-Compare solutions with other methods

How do we apply substitution method to different equations?

-KLB Grade 8 Mathematics pg. 67
-Equation charts
-Digital resources
-KLB Grade 8 Mathematics pg. 68

-Observation -Oral questions -Written tests

Algebra

Linear Equations - More on elimination method

By the end of the lesson, the learner should be able to:

-Apply elimination method to various equations
-Solve complex simultaneous equations
-Appreciate the elimination method

-Solve different types of linear equations using elimination
-Apply elimination method to practical problems
-Compare elimination with substitution method

When do we prefer elimination over substitution?

-KLB Grade 8 Mathematics pg. 70
-Equation charts
-Digital resources

-Observation -Oral questions -Written tests

Algebra

Linear Equations - Applying linear equations in real-life situations

By the end of the lesson, the learner should be able to:

-Apply linear equations to real-life situations
-Solve word problems using simultaneous equations
-Recognize use of linear equations in real life

-Practice forming and solving simultaneous equations from real-life cases
-Apply appropriate methods to solve problems
-Watch videos involving linear equations in real life

Where do we use linear equations in real life situations?

-KLB Grade 8 Mathematics pg. 70
-Internet access
-Digital resources

-Observation -Oral questions -Problem-solving tasks

Measurements

Circles - Working out the circumference of a circle

By the end of the lesson, the learner should be able to:

-Work out the circumference of a circle
-Apply the formula for circumference in calculations
-Show interest in learning about circles

-Wrap a paper strip around a cylinder and mark the start and end points
-Measure the distance between the marked points
-Calculate circumference using the formula C = πd
-Solve real-life problems involving circumference

How do we determine the circumference of a circle?

-KLB Grade 8 Mathematics pg. 71
-Circular objects
-Measuring tape or ruler

-Observation -Oral questions -Written assignments

Measurements

Circles - Working out the circumference of circles in real life

By the end of the lesson, the learner should be able to:

-Apply knowledge of circumference in real-life contexts
-Calculate the circumference of circular objects
-Value the importance of circles in everyday life

-Discuss and find the circumference of different circular objects in the environment
-Measure diameter and calculate circumference
-Solve real-life problems involving circumference

How do we use circles in real life situations?

-KLB Grade 8 Mathematics pg. 73
-Circular objects
-Digital resources

-Observation -Oral questions -Written tests

Measurements

Circles - Working out the length of an arc
Circles - Working out the length of an arc in real life

By the end of the lesson, the learner should be able to:

-Work out the length of an arc of a circle
-Apply the formula for arc length in calculations
-Show interest in arc lengths

-Draw a circle and cut it out
-Fold the cut-out into four equal parts
-Relate the arc length to the circumference
-Calculate arc length using the formula
-Use cut-outs to relate arc length to the circumference

How do we determine the length of an arc of a circle?

-KLB Grade 8 Mathematics pg. 73
-Paper
-Pair of compasses
-KLB Grade 8 Mathematics pg. 74
-Circular objects
-Protractors

-Observation -Oral questions -Written assignments

Measurements

Circles - Calculating the perimeter of a sector

By the end of the lesson, the learner should be able to:

-Calculate the perimeter of a sector of a circle
-Apply the formula for sector perimeter
-Show interest in using sectors

-Draw a circle and cut out the circle along its boundary
-Fold the circular cut-out into four equal parts and cut out one part
-Calculate the arc length of the sector
-Add the sum of the two radii to the arc length
-Determine the perimeter of the sector

How do we use sectors of a circle in real life situations?

-KLB Grade 8 Mathematics pg. 75
-Paper
-Pair of compasses
-Scissors

-Observation -Oral questions -Written assignments

Measurements

Area - Calculating the area of a circle

By the end of the lesson, the learner should be able to:

-Calculate the area of a circle
-Apply the formula for area of a circle
-Value the importance of circular areas

-Draw a circle on a graph paper
-Estimate its area by counting squares
-Calculate area using the formula A = πr²
-Compare the estimated and calculated areas

How do we use area in real life situations?

-KLB Grade 8 Mathematics pg. 77
-Graph paper
-Pair of compasses

-Observation -Oral questions -Written assignments

Measurements

Area - Working out the area of a circle in real life

By the end of the lesson, the learner should be able to:

-Apply knowledge of circular area in real-life contexts
-Calculate areas of circular objects
-Show interest in circular areas

-Discuss and work out areas of different circles
-Measure radius and calculate area
-Solve real-life problems involving circular area

How do we apply knowledge of circular area?

-KLB Grade 8 Mathematics pg. 79
-Circular objects
-Measuring tools

-Observation -Oral questions -Written tests

Measurements

Area - Working out the area of a sector

By the end of the lesson, the learner should be able to:

-Calculate the area of a sector of a circle
-Apply the formula for sector area
-Appreciate sectors in everyday objects

-Use cut-outs of sectors from locally available materials
-Express the angle of sector as a fraction of 360°
-Calculate sector area using the formula
-Relate the angle of the sector to the area of the circle

How do we calculate the area of a sector?

-KLB Grade 8 Mathematics pg. 80
-Paper
-Pair of compasses
-Protractors

-Observation -Oral questions -Written assignments

Measurements

Area - Working out the area of a sector in real life

By the end of the lesson, the learner should be able to:

-Apply knowledge of sector area in real-life contexts
-Calculate sector areas in various scenarios
-Show interest in sector applications

-Calculate sector areas for different angles
-Solve real-life problems involving sector areas
-Discuss practical applications of sectors

How do we use sectors in real life?

-KLB Grade 8 Mathematics pg. 81
-Sector models
-Protractors

-Observation -Oral questions -Written tests

Measurements

Area - Working out the surface area of cubes
Area - Working out the surface area of cuboids

By the end of the lesson, the learner should be able to:

-Work out the surface area of cubes
-Apply the formula for cube surface area
-Value the importance of surface area

-Use a model of a cube to identify faces
-Measure edges and calculate face areas
-Find the sum of areas of all faces
-Apply the formula for cube surface area

How do we calculate the surface area of a cube?

-KLB Grade 8 Mathematics pg. 82
-Cube models
-Measuring tools
-KLB Grade 8 Mathematics pg. 84
-Cuboid models

-Observation -Oral questions -Written assignments

Measurements

Area - Working out the surface area of cylinders

By the end of the lesson, the learner should be able to:

-Work out the surface area of cylinders
-Apply the formula for cylinder surface area
-Appreciate cylinders in everyday life

-Make a paper model of a cylinder
-Open the model to identify faces
-Calculate area of circular ends and curved face
-Apply the formula for cylinder surface area

How do we calculate the surface area of a cylinder?

-KLB Grade 8 Mathematics pg. 86
-Cylindrical objects
-Paper
-Scissors

-Observation -Oral questions -Written tests

Measurements

Area - Working out the surface area of triangular prisms

By the end of the lesson, the learner should be able to:

-Determine the surface area of triangular prisms
-Apply the formula for triangular prism surface area
-Show interest in prism measurements

-Use a model of triangular prism to identify faces
-Calculate areas of triangular faces and rectangular faces
-Find the sum of all face areas
-Apply the formula for triangular prism surface area

How do we calculate the surface area of a triangular prism?

-KLB Grade 8 Mathematics pg. 87
-Triangular prism models
-Measuring tools

-Observation -Oral questions -Written assignments

Measurements

Area - Working out the area of irregular shapes

By the end of the lesson, the learner should be able to:

-Work out the area of irregular shapes using square grids
-Estimate areas by counting grid squares
-Value the importance of area estimation

-Trace irregular shaped objects on square grids
-Count complete and partial squares
-Estimate areas by adding complete squares and half of partial squares
-Compare estimated areas with regular shapes

How do we determine the area of irregular shapes?

-KLB Grade 8 Mathematics pg. 88
-Square grid paper
-Irregular objects
-Tracing paper

-Observation -Oral questions -Written tests