Numbers

Addition - Adding two 3-digit numbers with single regrouping

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

- Add two 3-digit numbers with regrouping from ones to tens
- Use place value charts for addition with regrouping
- Show enthusiasm in solving addition problems

- Draw a place value chart and show 637 + 248
- Add ones (7 + 8 = 15) and regroup as 1 ten and 5 ones
- Add tens including the regrouped ten
- Add hundreds
- Solve similar addition problems

How do we add two 3-digit numbers with regrouping from ones to tens?

KLB Mathematical Activities Grade Three pg. 61
- Place value charts
- Abacus
- Base ten blocks

- Observation - Oral questions - Written exercises

Numbers

Addition - Adding two 3-digit numbers with single regrouping

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

- Add two 3-digit numbers horizontally with regrouping
- Apply addition in solving problems
- Value addition in daily activities

- Practice horizontal addition: 538 + 297 = 835
- Add ones with regrouping
- Add tens and hundreds
- Solve word problems involving addition with regrouping
- Share solution strategies with peers

How can we solve horizontal addition problems with regrouping?

KLB Mathematical Activities Grade Three pg. 62
- Place value charts
- Abacus
- Word problem cards
KLB Mathematical Activities Grade Three pg. 63
- Base ten blocks

- Observation - Oral questions - Written exercises

Numbers

Addition - Adding two 3-digit numbers with single regrouping

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

- Add horizontally with regrouping from tens to hundreds
- Apply addition in solving problems
- Appreciate addition in daily life

- Practice horizontal addition: 581 + 294 = 875
- Add ones: 1 + 4 = 5
- Add tens with regrouping: 8 + 9 = 17
- Add hundreds including the regrouped hundred
- Solve word problems involving such addition

How can we add horizontally when regrouping from tens to hundreds is needed?

KLB Mathematical Activities Grade Three pg. 64
- Place value charts
- Abacus
- Word problem cards

- Observation - Oral questions - Written exercises

Numbers

Addition - Creating number patterns involving addition up to 1000

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

- Identify patterns involving addition
- Find missing numbers in addition patterns
- Show interest in number patterns

- Find missing numbers in patterns like 20 + □ = 24, 24 + □ = 28
- Identify the rule in addition patterns (e.g., add 4, add 10)
- Complete patterns like 50 + □ = 60, 60 + □ = 70
- Create their own addition patterns

How do we identify the rule in addition patterns?

KLB Mathematical Activities Grade Three pg. 66
- Number cards
- Number charts
- Worksheets

- Observation - Oral questions - Written exercises

Numbers

Addition - Creating number patterns involving addition up to 1000

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

- Identify rules in addition patterns
- Apply rules to complete patterns
- Show enthusiasm for patterns

- Examine patterns like 10, 15, 20, 25, 30, 35 and identify the rule (add 5)
- Look at patterns like 35, 45, 55, 65, 75, 85 and identify the rule (add 10)
- Apply identified rules to extend patterns
- Create their own addition patterns with specific rules

How do we find and apply rules in number patterns?

KLB Mathematical Activities Grade Three pg. 67
- Number cards
- Number charts
- Worksheets

- Observation - Oral questions - Written exercises

Numbers

Addition - Creating number patterns involving addition up to 1000

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

- Find missing numbers in addition patterns
- Apply pattern rules to find missing numbers
- Appreciate patterns in mathematics

- Find missing numbers in patterns like 50, 70, 90, _, _, _
- Identify the rule (add 20) and complete the pattern: 110, 130, 150
- Find missing numbers in various patterns with different rules
- Share strategies for identifying pattern rules

How do we find missing numbers in addition patterns?

KLB Mathematical Activities Grade Three pg. 68
- Number cards
- Number charts
- Worksheets

- Observation - Oral questions - Written exercises

Numbers

Addition - Creating number patterns involving addition up to 1000

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

- Create number patterns with addition rules
- Apply specific rules to create patterns
- Show creativity in making patterns

- Create patterns with specific rules, e.g., "Starting from 5, add 3" to get 5, 8, 11, 14, 17
- Create patterns starting from different numbers with various rules
- Exchange patterns with peers and identify the rules
- Design pattern puzzles for classmates to solve

How do we create our own addition patterns with specific rules?

KLB Mathematical Activities Grade Three pg. 69
- Number cards
- Number charts
- Worksheets
- Pattern examples

- Observation - Oral questions - Written exercises

Numbers

Subtraction - Subtracting a 3-digit number from a 3-digit number with single regrouping

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

- Subtract a 3-digit number from a 3-digit number without regrouping
- Use an abacus for subtraction
- Show interest in subtraction

- Work in groups to subtract 375 - 124 using an abacus
- Take away 4 rings from ones spike, 2 rings from tens spike, and 1 ring from hundreds spike
- Practice similar subtraction problems
- Solve word problems involving such subtraction

How do we subtract one 3-digit number from another?

KLB Mathematical Activities Grade Three pg. 80
- Abacus
- Place value charts
- Base ten blocks

- Observation - Oral questions - Written exercises

Numbers

Subtraction - Subtracting a 3-digit number from a 3-digit number with single regrouping

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

- Subtract 3-digit numbers with regrouping from tens to ones
- Use place value charts
- Show interest in subtraction

- Work out subtraction: 347 - 128 = 219
- Recognize that 8 cannot be directly subtracted from 7
- Regroup 1 ten as 10 ones, adding to 7 ones to get 17 ones
- Subtract 8 from 17 to get 9 ones
- Subtract 2 from 3 tens to get 1 ten
- Subtract 1 from 3 hundreds to get 2 hundreds
- Practice similar problems

How do we regroup when subtracting 3-digit numbers?

KLB Mathematical Activities Grade Three pg. 92
- Place value charts
- Abacus
- Base ten blocks

- Observation - Oral questions - Written exercises

Numbers

Subtraction - Subtracting a 3-digit number from a 3-digit number with single regrouping

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

- Subtract with regrouping from hundreds to tens
- Use place value charts
- Show enthusiasm in subtraction

- Work out subtraction: 518 - 294 = 224
- Subtract ones: 8 - 4 = 4
- Recognize that 9 cannot be directly subtracted from 1
- Regroup 1 hundred as 10 tens, adding to 1 ten to get 11 tens
- Subtract 9 from 11 to get 2 tens
- Subtract 2 from 4 hundreds to get 2 hundreds
- Practice similar problems

How do we regroup from hundreds to tens when subtracting 3-digit numbers?

KLB Mathematical Activities Grade Three pg. 94
- Place value charts
- Abacus
- Base ten blocks

- Observation - Oral questions - Written exercises

Numbers

Subtraction - Subtracting a 3-digit number from a 3-digit number with single regrouping

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

- Subtract 3-digit numbers horizontally with regrouping
- Apply subtraction in solving problems
- Value different subtraction methods

- Practice horizontal subtraction with regrouping
- Compare vertical and horizontal subtraction
- Solve word problems involving subtraction with regrouping
- Share solution strategies with peers

How can we subtract 3-digit numbers horizontally with regrouping?

KLB Mathematical Activities Grade Three pg. 96
- Place value charts
- Number cards
- Word problem cards

- Observation - Oral questions - Written exercises

Numbers

Subtraction - Subtracting up to 3-digit numbers involving missing numbers with single regrouping

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

- Fill in missing numbers in subtraction
- Use inverse operations to find missing numbers
- Show interest in subtraction puzzles

- Complete exercises like: 320 - □ = 315 or 320 - 5 = □
- Use inverse operations to find missing numbers
- Create their own subtraction puzzles with missing numbers
- Exchange puzzles with peers to solve

How do we find missing numbers in subtraction?

KLB Mathematical Activities Grade Three pg. 97
- Number cards
- Worksheets
- Place value charts

- Observation - Oral questions - Written exercises

Numbers

Subtraction - Working out missing numbers in patterns involving subtraction up to 1000

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

- Find missing numbers in subtraction patterns
- Identify the rule in subtraction patterns
- Appreciate patterns in mathematics

- Complete patterns like: 90, 85, 80, _, _, _
- Identify the rule (subtract 5) and fill in: 75, 70, 65
- Work with various patterns with different rules
- Create their own subtraction patterns

How do we identify and complete subtraction patterns?

KLB Mathematical Activities Grade Three pg. 98
- Number charts
- Number cards
- Worksheets

- Observation - Oral questions - Written exercises

Numbers

Subtraction - Working out missing numbers in patterns involving subtraction up to 1000

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

- Create patterns with subtraction rules
- Apply specific rules to create patterns
- Show creativity in pattern creation

- Create patterns starting from 30 with the rule "subtract 2"
- Create patterns with various starting points and rules
- Exchange patterns with peers and solve each other's patterns
- Discuss different ways to create subtraction patterns

How do we create our own subtraction patterns?

KLB Mathematical Activities Grade Three pg. 99
- Number charts
- Number cards
- Worksheets

- Observation - Oral questions - Written exercises

Numbers

Subtraction - Working out missing numbers in patterns involving subtraction up to 1000

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

- Identify complex subtraction patterns
- Find missing numbers in patterns
- Value patterns in mathematics

- Identify patterns involving larger numbers
- Complete patterns like: 900, 850, 800, _, _, _
- Create their own patterns with specific rules
- Discuss patterns found in the environment

How do we identify patterns in larger numbers?

KLB Mathematical Activities Grade Three pg. 98
- Number charts
- Number cards
- Environmental patterns

- Observation - Oral questions - Written exercises

Numbers

Multiplication - Multiplying a single digit number by a single digit number

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

- Multiply a single digit number by a single digit number
- Use repeated addition for multiplication
- Show enthusiasm for multiplication

- Use repeated addition to find products: 6 × 6 = 6 + 6 + 6 + 6 + 6 + 6 = 36
- Fill in gaps: 5 + 5 + 5 = _ × 5 = 15
- Create multiplication expressions for given repeated addition
- Solve simple multiplication problems

How do we find the product of two single-digit numbers?

KLB Mathematical Activities Grade Three pg. 107
- Counters
- Number cards
- Multiplication tables
KLB Mathematical Activities Grade Three pg. 108
- Multiplication tables
- Counters

- Observation - Oral questions - Written exercises

Numbers

Multiplication - Multiplying a single digit number by a single digit number

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

- Multiply single-digit numbers fluently
- Apply multiplication in solving problems
- Show interest in using multiplication

- Practice multiplication facts
- Solve word problems involving multiplication
- Work in pairs to quiz each other on multiplication facts
- Play multiplication games to reinforce learning

How can we apply multiplication to solve problems?

KLB Mathematical Activities Grade Three pg. 110
- Multiplication fact cards
- Word problem cards
- Game materials

- Observation - Oral questions - Written exercises

Numbers

Division - Dividing 2-digit numbers by single-digit numbers without remainder

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

- Divide 2-digit numbers by 2, 3, and 6
- Use repeated subtraction for division
- Show enthusiasm for division

- Divide numbers like 16 ÷ 2, 18 ÷ 3, 24 ÷ 6 using repeated subtraction
- Count how many times the divisor can be subtracted
- Practice similar division problems
- Solve word problems involving division

How do we divide using repeated subtraction?

KLB Mathematical Activities Grade Three pg. 122
- Counters
- Number cards
- Worksheets

- Observation - Oral questions - Written exercises

Numbers

Division - Dividing 2-digit numbers by single-digit numbers without remainder

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

- Divide 2-digit numbers by 7, 8, and 9
- Use repeated subtraction for division
- Value division in solving problems

- Divide numbers like 21 ÷ 7, 24 ÷ 8, 18 ÷ 9 using repeated subtraction
- Practice similar division problems
- Solve word problems involving division
- Create their own division problems

How do we divide a 2-digit number by a single-digit number?

KLB Mathematical Activities Grade Three pg. 123
- Counters
- Number cards
- Worksheets

- Observation - Oral questions - Written exercises

Numbers
Measurement

Fractions - Identifying ⅛ as part of a whole
Length - Measuring length in metres

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

- Represent an eighth in different shapes
- Shade an eighth of given shapes
- Value fractions in representing parts of a whole

- Identify shapes divided into eight equal parts
- Copy shapes and shade an eighth of each
- Create their own shapes and shade an eighth
- Write ⅛ as the fraction representing an eighth

How do we write an eighth as a fraction?

KLB Mathematical Activities Grade Three pg. 136
- Shape cut-outs
- Manila papers
- Scissors
- Colored pencils
- KLB Mathematical Activities Grade Three pg. 149
- Metre sticks
- String
- Rulers
- Chalk board

- Observation - Practical tasks - Written exercises

Measurement

Length - Adding length in metres
Length - Subtracting length in metres
Mass - Adding mass in kilograms

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

- Add length in metres
- Solve real-life problems involving addition of length in metres
- Show interest in adding length measurements

- Learners in pairs/groups measure the length of the chalkboard and the teacher's table in metres and add the lengths
- Learners work out questions involving addition of length in real life situations
- Learners practice adding lengths horizontally and vertically

How do you arrange numbers when adding lengths downwards?

- KLB Mathematical Activities Grade Three pg. 153
- Metre sticks
- Manila paper
- Charts
- KLB Mathematical Activities Grade Three pg. 154
- Measuring tape
- School map
- KLB Mathematical Activities Grade Three pg. 161
- Beam balance
- Sand
- Classroom model shop items

- Observation - Oral questions - Written assignments

Measurement

Mass - Subtracting mass in kilograms

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

- Subtract mass in kilograms
- Solve real-life problems involving subtraction of mass in kilograms
- Appreciate subtraction of mass in real life situations

- Learners in groups measure 6kgs of sand
- Learners remove 4kgs of sand and measure the remaining sand
- Learners work out the differences between the masses of items in the classroom model shop
- Learners solve word problems involving subtraction of mass

How do you find the difference between two masses?

- KLB Mathematical Activities Grade Three pg. 163
- Beam balance
- Sand
- Classroom model shop items

- Observation - Oral questions - Written exercises

Measurement

Capacity - Adding capacity in litres
Capacity - Subtracting capacity in litres

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

- Add capacity in litres
- Solve real-life problems involving addition of capacity in litres
- Value accuracy in addition of capacity

- Learners in groups take a 1 litre bottle and use it to fill a jerrycan with water
- Learners use 1 litre bottles to fill a basin with water
- Learners find the total number of litres of water in the two containers
- Learners practice addition of capacity in litres through exercises

How do we find the total capacity of two or more containers?

- KLB Mathematical Activities Grade Three pg. 173
- One litre containers
- Various containers
- Water
- KLB Mathematical Activities Grade Three pg. 175

- Observation - Oral questions - Written exercises

Measurement

Capacity - Estimating capacity up to 5 litres (1)

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

- Compare capacity using a 5 litre container
- Identify containers that hold more than or less than 5 litres
- Show interest in comparing capacity

- Learners in groups work to show which containers hold more than or less than 5 litres
- Learners compare various containers like kettle, jug, basin, sufuria, jerrycan, and bucket with a 5 litre container
- Learners identify containers that hold more than or less than 5 litres

Which household containers hold more than 5 litres?

- KLB Mathematical Activities Grade Three pg. 176
- 5 litre container
- Various containers (kettle, jug, basin, sufuria, jerrycan, bucket)
- Water

- Observation - Oral questions - Practical activities

Measurement

Capacity - Estimating capacity up to 5 litres (2)

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

- Estimate capacity up to 5 litres
- Compare estimated and actual capacity
- Value accuracy in estimation

- Learners in groups estimate the capacity of various containers up to 5 litres
- Learners measure the actual capacity and record in a table
- Learners compare their estimations with actual measurements
- Learners discuss strategies for improving estimation accuracy

How close can your estimation be to the actual capacity?

- KLB Mathematical Activities Grade Three pg. 177
- Various containers
- One litre container
- Water

- Observation - Oral questions - Written exercises

Measurement

Time - Estimating time in hours

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

- Estimate time in hours
- Round time to the nearest hour
- Value time management

- Learners in groups take a clock face and show a time with the minute hand pointing at a specific position
- Learners read the number which is nearest the hour hand
- Learners estimate and round time to the nearest hour
- Learners solve problems involving estimation of time

How do we estimate time to the nearest hour?

- KLB Mathematical Activities Grade Three pg. 196
- Clock faces
- Digital clocks
- Charts showing different times

- Observation - Oral questions - Written exercises

Measurement

Time - Adding time (hours and minutes without conversion)

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

- Add time involving hours and minutes without conversion
- Solve real-life problems involving addition of time
- Appreciate addition of time in daily activities

- Learners in groups write addition of time in vertical form
- Learners add the minutes
- Learners add the hours
- Learners solve word problems involving addition of time

How do we add hours and minutes separately?

- KLB Mathematical Activities Grade Three pg. 197
- Clock faces
- Digital clocks
- Charts showing addition of time

- Observation - Oral questions - Written exercises

Measurement

Time - Subtracting time (hours and minutes without conversion)
Money - Converting money into different denominations

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

- Subtract time involving hours and minutes without conversion
- Solve real-life problems involving subtraction of time
- Value time management

- Learners in groups arrange subtraction of time in vertical form
- Learners subtract the minutes
- Learners subtract the hours
- Learners solve word problems involving subtraction of time

How do we subtract hours and minutes separately?

- KLB Mathematical Activities Grade Three pg. 197
- Clock faces
- Digital clocks
- Charts showing subtraction of time
- KLB Mathematical Activities Grade Three pg. 209
- Kenyan currency (real or imitations)
- Charts showing conversion of denominations
- Classroom model shop

- Observation - Oral questions - Written exercises

Measurement

Money - Using money to buy up to 3 items involving balance

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

- Use money to buy up to 3 items involving balance
- Calculate total cost and change when buying items
- Value honesty when handling money

- Learners use a price list to select items to buy
- Learners calculate the total cost of up to 3 items
- Learners determine the balance (change) to be received after payment
- Learners role play buying and selling scenarios in a model shop

How do you calculate the balance after buying multiple items?

- KLB Mathematical Activities Grade Three pg. 211
- Kenyan currency (real or imitations)
- Price lists
- Classroom model shop

- Observation - Oral questions - Role play assessment

Geometry

Shapes - Modeling a combined shape made of two shapes

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

- Model a combined shape made of two shapes
- Create three-dimensional combined shapes
- Appreciate modeling as an artistic expression

- Learners use plasticine to model a circle and an oval
- Learners form a combined shape from the two shapes
- Learners use sticks to model combined shapes
- Learners use strings or plasticine to model various combined shapes

How can we model combined shapes using different materials?

- KLB Mathematical Activities Grade Three pg. 226
- Plasticine
- Sticks
- String
- Paper

- Observation - Oral questions - Practical activities