MEASUREMENT

Circles

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

identify the circumference of a circle.
work out the circumference of a circle in real life situations
promote use of circles in real life situations.

- The learner is guided to:
discuss with others and find the circumference of different circular objects in the environment

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

Cut outs of sectors, papers, ruler
KLB Top Scholar Maths Grade 8 T.G Pg. 63-64
KLB Top Scholar Maths Grade 8 P.B Pg. 71-72

Written exercise Assessment rubrics Observation schedule Oral question

MEASUREMENT

Working out the length of an arc of a circle in different situations
Working out the length of an Arc of a circle in different situations

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

describe an arc
work out the length of an Arc of a circle in different situations
promote use of circles in real life situations.

The learner is guided to:
use cut outs to relate arc length to the circumference of a circle, starting with semicircle, then quarter of a circle etc.

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

Cut outs of sectors, papers, ruler
KLB Top Scholar Maths Grade 8 T.G Pg. 65
KLB Top Scholar Maths Grade 8 P.B Pg. 72-74
KLB Top Scholar Maths Grade 8 T.G Pg. 66

Written exercise Assessment rubrics Observation schedule Oral question

MEASUREMENT

Calculating the perimeter of a sector of a circle in different situations
Calculating the perimeter of a sector of a circle

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

describe the perimeter of a sectors,
calculate the Perimeter of a sector of a circle in different situations
promote use of circles in real life situations.

- The learner is guided to:
use cut outs of sectors of circles from locally available materials and work out the perimeter of the sectors.
Discuss and make any object with the sector that can be used in real life situations.
use IT or other resources to explore use of sectors of circles in daily life

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

Cut outs of sectors, papers, ruler
KLB Top Scholar Maths Grade 8 T.G Pg. 66-67
KLB Top Scholar Maths Grade 8 P.B Pg. 74-76
KLB Top Scholar Maths Grade 8 T.G Pg. 67-68

Written exercise Assessment rubrics Observation schedule Oral question

Measurements

Circles; Working out the circumference of a circle in real life situations
Working out the length of an arc of a circle in different situations

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

Identify four circular objects in their school, for example a wall clock.
Measure the circumference and diameter of the objects.
Have fun and enjoy measuring circumference and diameter of the objects.

In groups, learners to identify four circular objects in their school, for example a wall clock.
In groups, learners to measure the circumference and diameter of the objects

What is the circumference of your classroom wall clock?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 71-72
Ruler
Digital devices
Learner's Book Grade 8 pg. 72-74

Oral questions Oral Report Observation Written exercise

Measurements

Calculating the perimeter of a sector of a circle in different situations
Area; Calculating the Area of a Circle in Different Situations

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

Draw a circle of radius 3.5cm on a piece of paper.
Fold the circular cut-out into four equal parts and cut out one of the four parts.
Calculate the arc length of the sector cut off.
Enjoy calculating the perimeter of a sector of a circle in different situations.

In groups or in pairs, learners are guided to draw a circle of radius 3.5cm on a piece of paper.
In groups or in pairs, learners are guided to fold the circular cut-out into four equal parts and cut out one of the four parts.
In groups or in pairs, learners are guided to calculate the arc length of the sector cut off.

How do you calculate the perimeter of a sector of a circle in different situations?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 74-76
Ruler
Digital devices
Learner's Book Grade 8 pg. 77-78

Oral questions Oral Report Observation Written exercise

Measurements

Working out the area of a sector of a circle in different situations
Working out the surface area of cubes in real life situations

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

Define the term sector.
Draw a circle of radius 7cm on a graph of paper.
Work out the area of a sector of a circle in different situations.
Enjoy working out the area of a sector of a circle in different situations.

In groups or in pairs, learners are guided to define the term sector.
In groups or in pairs, learners are guided to draw a circle of radius 7cm on a graph of paper.
In groups or in pairs, learners are guided to work out the area of a sector of a circle in different situations.

How do you work out the area of a sector of a circle in different situations?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 78-79
Ruler
Digital devices
Learner's Book Grade 8 pg. 80-81

Oral questions Oral Report Observation Written exercise

Measurements

Working out the surface area of cuboids in real life situations
Working out the surface area of cylinders in real life situations

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

State the formula of calculating surface area of cuboids.
Identify three pairs of faces with equal dimensions.
Work out the surface area of cuboids in real life situations.
Enjoy working out the surface area of cuboids in real life situations.

In groups or in pairs, learners are guided to state the formula of calculating surface area of cuboids.
In groups or in pairs, learners are guided to identify three pairs of faces with equal dimensions.
In groups or in pairs, learners are guided to work out the surface area of cuboids in real life situations.

How do you work out the surface area of cuboids in real life situations?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 81-83
Ruler
Digital devices
Learner's Book Grade 8 pg. 83-85

Oral questions Oral Report Observation Written exercise

Measurements

Determining the surface area of triangular prisms in different situations.
Working out the area of irregular shapes using square grids in real life situations.

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

State the formula of calculating surface area of triangular prisms.
Determine the surface area of triangular prisms in different situations.
Work out the surface area of triangular prisms in real life situations.
Enjoy working out the surface area of triangular prisms in real life situations.

In groups or in pairs, learners are guided to state the formula of calculating surface area of triangular prisms.
In groups or in pairs, learners are guided to determine the surface area of triangular prisms in different situations.
In groups or in pairs, learners are guided to work out the surface area of triangular prisms in real life situations.

How do you work out the surface area of triangular prisms in real life situations?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 85-87
Ruler
Digital devices
Learner's Book Grade 8 pg. 87-89

Oral questions Oral Report Observation Written exercise

Measurements

Money; Identifying interest and principal in real life situations
Calculating simple interest in real life situations

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

Visit a financial institution in their neighbourhood.
Discuss how money is deposited and borrowed from a financial institution.
Have fun and enjoy the visit.

In groups or in pairs, learners are guided to visit a financial institution in their neighbourhood.
In groups or in pairs, learners are guided to discuss how money is deposited and borrowed from a financial institution.

How is money deposited?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 89-90
Ruler
Digital devices
Learner's Book Grade 8 pg. 90-92

Oral questions Oral Report Observation Written exercise

Measurements

Calculating compound interest step by step per annum up to three years in real life situations
Working out Appreciation and Depreciation step by step per annum up to three years in different situations
Working out appreciation

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

Define compound interest.
State the formula of calculating compound interest step by step per annum up to three years.
Calculate compound interest step by step per annum up to three years in real life situations.
Enjoy calculating compound interest step by step per annum up to three years in real life situations.

In groups or in pairs, learners are guided to define compound interest.
In groups or in pairs, learners are guided to state the formula of calculating compound interest step by step per annum up to three years.
In groups or in pairs, learners are guided to calculate compound interest step by step per annum up to three years in real life situations.

What is compound interest?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 92-94
Ruler
Digital devices
Learner's Book Grade 8 pg. 94
Learner's Book Grade 8 pg. 95-96

Oral questions Oral Report Observation Written exercise

Measurements

Working out depreciation
Working out hire purchase in real life situations

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

Explain the meaning of depreciation.
State the formula of calculating depreciation
Work out depreciation.
Enjoy working out depreciation

In groups or in pairs, learners are guided to explain the meaning of depreciation.
In groups or in pairs, learners are guided to state the formula of calculating depreciation
In groups or in pairs, learners are guided to work out depreciation.

What is depreciation? How do you calculate depreciation?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 96-97
Ruler
Digital devices
Learner's Book Grade 8 pg. 98-99

Oral questions Oral Report Observation Written exercise

Measurements
Geometry

Digital time
Scale Drawing; Representing lengths to a given scale in different situations

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

Use the link: https://www.youtube.com/watch?v=w9jxqObvAo8
Watch the video clip on simple interest.
Have fun and enjoy watching the video.

In groups or in pairs, learners are guided to use the link: https://www.youtube.com/watch?v=w9jxqObvAo8
In groups or in pairs, learners are guided to watch the video clip on simple interest.

What is simple interest?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 99
Ruler
Digital devices
Learner's Book Grade 8 pg. 143-144

Oral questions Oral Report Observation Written exercise

Geometry

Converting actual length to scale length in real life situations
Converting scale length to actual length in real life situations

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

Use a ruler or tape measure to measure the length of the classroom.
Convert actual length to scale length in real life situations.
Record the results in a table.
Enjoy converting actual length to scale length in real life situations.

In groups, learners are guided to use a ruler or tape measure to measure the length of the classroom.
In groups, learners are guided to convert actual length to scale length in real life situations.
In groups, learners are guided to record the results in a table.

How do you convert actual length to scale length?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 145-146
Ruler
Digital devices
Learner's Book Grade 8 pg. 146-147

Oral questions Oral Report Observation Written exercise

Geometry

Interpreting linear scales in statements form in different situations
Writing Linear scale in Statement form in different situations

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

Identify situations when a scale can be interpreted.
Do activity 5 in learner's book 8 page 148
Interpret linear scales in statements form in different situations.
Enjoy interpreting linear scales in statements form in different situations.

In groups, learners are guided to identify situations when a scale can be interpreted.
In groups, learners are guided to do activity 5 in learner's book 8 page 148
In groups, learners are guided to interpret linear scales in statements form in different situations.

How do you interpreting linear scales in statements form in different situations?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 148-149
Ruler
Digital devices
Learner's Book Grade 8 pg. 149-151

Oral questions Oral Report Observation Written exercise

Geometry

Interpreting linear scales in ratio form in different situations
Writing linear scales in ratio form in different situations.

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

Draw the table in learner's book 8 page 151
Interpret linear scales in ratio form.
Enjoy interpreting linear scales in ratio form.

In groups, learners are guided to draw the table in learner's book 8 page 151
In groups, learners are guided to interpret linear scales in ratio form.

How do you interpret linear scales in ratio form?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 151-152
Ruler
Digital devices
Learner's Book Grade 8 pg. 152-153

Oral questions Oral Report Observation Written exercise

Geometry

Converting linear scale from statement form to ratio form in different situations
Converting linear scale from ratio from to statement form in different situations

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

Consider the scale 1 cm represents 4m and convert 4 m to centimetres.
Convert linear scale from statement form to ratio form.
Enjoy converting linear scale from statement form to ratio form in different situations.

In groups or in pairs, learners are guided to consider the scale 1 cm represents 4m and convert 4 m to centimetres.
In groups, learners are guided to express the scale in ratio form.
In groups, learners are guided to convert linear scale from statement form to ratio form.

How do you convert linear scale from statement form to ratio form?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 153-154
Ruler
Digital devices
Learner's Book Grade 8 pg. 154-155

Oral questions Oral Report Observation Written exercise

Geometry

Making scale drawing in different situations
Digital time

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

Making scale drawing in different situations.
Recognize the use of scale drawing in maps.
Applying scale drawing in real life situations.

In groups, learners are guided to making scale drawing in different situations.
In groups, learners are guided to recognize the use of scale drawing in maps.

How do you use scale drawing in real life situations?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 155-157
Ruler
Digital devices
Learner's Book Grade 8 pg. 157

Oral questions Oral Report Observation Written exercise

Common solids

Identification of common solids from the environment
Nets of Common Solids in Different Situations

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

Collect solids of different shapes from your environment.
Group them according to their shapes.
Appreciate different types of solids of different shapes.

In groups, learners are guided to collect solids of different shapes from your environment.
In groups, learners are guided to group them according to their shapes
In groups, learners are guided to identify each case count the number of faces, edges and vertices a solid has.

What is a solid? Which are the common solids found in your environment?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 158-159
Ruler
Digital devices
Learner's Book Grade 8 pg. 159-160

Oral questions Oral Report Observation Written exercise

Common solids

Draw a rectangular based pyramid
Working out Surface Area of Solids from nets of solids in different situations

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

Cut along slating edges VA, VB, VC, and VD
Draw the resulting net accurately showing the measurements.
Have fun and enjoy drawing the net of cube and pyramid.

In groups, learners are guided to cut along slating edges VA, VB, VC, and VD
In groups, learners are guided to draw the resulting net accurately showing the measurements.

What is the formula of working out circumference?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 160-165
Ruler
Digital devices
Learner's Book Grade 8 pg. 166

Oral questions Oral Report Observation Written exercise

Common solids

Working out Surface Area of Solids from nets of solids in different situations
Determining the Distance between two points on the surface of a solid in different situations
Making models of Hollow and compact solids

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

Explain the meaning of surface area of a cuboid.
Calculate the surface area of a pyramid.
Appreciate the surface area of a pyramid.

In groups, learners are guided to explain the meaning of surface area of a cuboid.
In groups, learners are guided to write the formula of working out the surface area of a pyramid.
In groups, learners are guided to calculate the surface area of a pyramid.

What is the surface area of a cuboid?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 166-171
Ruler
Digital devices
Learner's Book Grade 8 pg. 171-174
Learner's Book Grade 8 pg. 175

Oral questions Oral Report Observation Written exercise

Common solids

Making models of Hollow and compact solids

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

Draw a compact cylindrical model.
Fold the net along the dotted lines.
Fix the faces by gluing the flaps firmly.
Enjoy drawing a compact cylindrical model.

In groups, learners are guided to draw a compact cylindrical model.
In groups, learners are guided to fold the net along the dotted lines.
In groups, learners are guided to fix the faces by gluing the flaps firmly.

How do you draw a compact cylindrical model?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 176
Ruler
Digital devices
Learner's Book Grade 8 pg. 177

Oral questions Oral Report Observation Written exercise

Common solids
Data Handling and Probability

Digital time
Data presentation and Interpretation

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

Open the link: https://www.youtube.com/watch?=_3iHKEbHTeQ&t=19s
Watch the video clip on nets of Common solids.
Appreciate the use of digital devices.

As a class, learners are guided to open the link: https://www.youtube.com/watch?=_3iHKEbHTeQ&t=19s
As a class, learners are guided to watch the video clip on nets of Common solids.
As a class, learners are guided to write short points about the video.

What have you learnt about nets of Common Solids?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 177
Ruler
Digital devices
Learner's Book Grade 8 pg. 178-180

Oral questions Oral Report Observation Written exercise

Data Handling and Probability

Interpreting bar graphs of data from real life situations.
Drawing line graphs of given data from real life situations.

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

Draw a bar graph representing amounts earned on sales of items in a certain week.
Determine the day when the sales were highest.
Appreciate the importance of Interpreting bar graphs of data from real life situations.

In groups, learners are guided to draw a bar graph representing amounts earned on sales of items in a certain week.
In groups, learners are guided to determine the day when the sales were highest.
In groups, learners are guided to determine the sat when the sales were lowest.

How much more sales were made on Wednesday than Friday?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 180-184
Ruler
Digital devices
Learner's Book Grade 8 pg. 184-186

Oral questions Oral Report Observation Written exercise

Data Handling and Probability

Interpreting line graphs of data from real life situations.
Identifying the mode of a set of discrete data from real life situations

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

Consider the graph showing the distance covered by a car travelling from town A to town D through B and C
Find the time the car left town A
Appreciate interpreting line graphs of data from real life situations.

In groups, learners are guided to consider the graph showing the distance covered by a car travelling from town A to town D through B and C
In groups, learners are guided to find the time the car left town A
In groups, learners are guided to find how far the car was at 1:00 p.m. from town A

How do you interpret line graphs of data from real life situations?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 187-191
Ruler
Digital devices
Learner's Book Grade 8 pg. 191-192

Oral questions Oral Report Observation Written exercise

Data Handling and Probability

Calculating the mean of a set of discrete data from real life situations
Determining the median of a set of discrete data from real life situations

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

Identify the formula of working out the mean.
Consider the ages of your fellow classmates and find the sum of the ages.
Enjoy calculating the mean of a set of discrete data from real life situations.

In groups, learners are guided to identify the formula of working out the mean.
In groups, learners are guided to consider the ages of your fellow classmates and find the sum of the ages.
In groups, learners are guided to divide the sum by the total number of learners.

How do you work out the mean of a set of discrete data?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 193-194
Ruler
Digital devices
Learner's Book Grade 8 pg. 194-196

Oral questions Oral Report Observation Written exercise

Data Handling and Probability

Digital device
Probability; Identifying events involving chance in real life situations

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

Open the link: https://youtube.be/IldxOU-v3sM
Watch the video clip on calculating mean of discrete data
Appreciate the use of digital devices.

As a class, learners are guided to open the link: https://youtube.be/IldxOU-v3sM
As a class, learners are guided to watch the video clip on calculating mean of discrete data.
As a class, learners are guided to write short points about the video.

What have you learnt about mean and median of discrete data?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 196
Ruler
Digital devices
Learner's Book Grade 8 pg. 197

Oral questions Oral Report Observation Written exercise

Data Handling and Probability

Performing chance experiments in different situations
Writing experimental probability outcomes in different situations

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

Explain the meaning of chance experiment.
Flip a coin once and record the outcome as either head or tail.
Have fun and enjoy performing chance experiments.

In groups, learners are guided to explain the meaning of chance experiment.
In groups, learners are guided to flip a coin once and record the outcome as either head or tail.
In groups, learners to discuss possible outcomes when fair coin is flipped once.

What is the meaning of chance experiment?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 198-199
Ruler
Digital devices
Learner's Book Grade 8 pg. 199-200

Oral questions Oral Report Observation Written exercise

Data Handling and Probability

Expressing probability outcomes in fractions in different situations
Expressing probability outcomes in decimals or percentages in different situations
Digital devices
Digital devices

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

Define the term probability.
Flip a coin ten times and write down all the outcomes as they occur.
Appreciate the importance of probability.

In groups, learners are guided to define the term probability.
In groups, learners are guided to flip a coin ten times and write down all the outcomes as they occur.
In groups, learners are guided to use all the outcomes obtained, fill in the table in learner's book 8 page 200

What is probability?

KLB; Top Scholar: Mathematics
Learner's Book Grade 8 pg. 200-202
Ruler
Digital devices
Learner's Book Grade 8 pg. 203-204
Learner's Book Grade 8 pg. 204
KLB;
Top Scholar: Mathematics
Learner's Book Grade 8 pg. 204

Ruler
Digital devices

Oral questions Oral Report Observation Written exercise