TERM: 1^{st} Term
WEEK: 7
CLASS: Primary 3
AGE: 8 years
DURATION: 5 periods of 40 minutes each
DATE:
SUBJECT: Mathematics
TOPIC: Addition and subtraction
SPECIFIC OBJECTIVES: At the end of the lesson, the pupils should be able to
INSTRUCTIONAL TECHNIQUES: Explanation, question and answer, demonstration, practical, assessments
INSTRUCTIONAL MATERIALS: Base 10 kit, 100 number board, scrap paper, videos from source https://www.youtube.com/watch?v=_1Z9SQHB5J0
https://www.youtube.com/watch?v=18qLbg1Gmk
PERIOD 1: Subtraction using the column method
PRESENTATION  TEACHER’S ACTIVITY  PUPIL’S ACTIVITY 
STEP 1 MENTAL MATHS  The teacher begins the lesson with some mental calculations Calculate 1. 10 3 = 2. 20 – 5 = 3. 30 – 6 = 4. 40 – 1 = 5. 50 – 8 = 6. 60 – 2 = 7. 70 – 4 = 8. 80 – 7 = 9. 90 – 9 = 10. 100 – 10 =  Pupils respond and participate 
STEP 2 CONCEPT DEVELOPMENT  The teacher writes 105 – 46 = on the board. Learners are asked to solve this using the base ten kits or simplified pictorials
Use the same process to solve 102 – 9 = 100 – 7 = 132 – 128 =
The teacher also explains how to check if the solution to a subtraction problem is correct
105 – 46 = 59 Check: 59 + 46 = 105
 Pupils pay attention and participate 
STEP 3 CLASSWORK  1. Use column method and simplified pictorials to solve the following a. 105 – 56 = b. 103 – 49 = c. 106 – 9 = d. 100 – 4 = e. 142 – 138 =  Pupils attempt their class work 
STEP 4 HOMEWORK  1. Use column method and simplified pictorials to solve the following a. 107 – 49 = b. 108 – 9 = c. 121 – 116 =
 Pupils attempt their class work 
STEP 5 SUMMARY  The teacher summarizes reminding the pupils of the steps in carrying out subtraction using the simplified pictorial and the column method and also what to do when there is a zero in the tens or the ones place
She marks their class works, makes corrections where necessary and commends them positively 

PERIOD 2: Subtraction using various strategies
PRESENTATION  TEACHER’S ACTIVITY  PUPIL’S ACTIVITY 
STEP 1 MENTAL MATHS  The teacher begins the lesson with some mental calculations Calculate 1. 100  70 = 2. 100 – 20 = 3. 100 – 50 = 4. 100 – 60 = 5. 100 – 40 = 6. 100 – 90 = 7. 100 – 30 = 8. 100 – 80 = 9. 100 – 10 = 10. 100 – 100 =  Pupils respond and participate 
STEP 2 CONCEPT DEVELOPMENT  The teacher writes 157 – 88 = on the board. Learners are asked to solve this using the base ten kits or simplified pictorials
A learner is asked to show the solution to the question on the board
Use the same process to solve 143 – 89 = 186 – 99 = 124 – 65 =
The teacher also explains how to check if the solution to a subtraction problem is correct
157 – 88 = 69 Check: 69 + 88 = 157  Pupils pay attention and participate 
STEP 3 CLASSWORK  1. Use column method and simplified pictorials to solve the following a. 136 – 97 = b. 166 – 78 = c. 144 – 99 = d. 192 – 98 = e. 155 – 79 = f. 147 – 69 = g. 165 – 86 =  Pupils attempt their class work 
STEP 4 HOMEWORK  1. Use column method and simplified pictorials to solve the following a. 158 – 79 = b. 111 – 22 = c. 143 – 86 = d. 137 – 18 =  Pupils attempt their class work 
STEP 5 SUMMARY  The teacher summarizes reminding the pupils of the steps in carrying out subtraction using the simplified pictorial and the column method , what to do when there is a zero in the tens or the ones place and how to check whether the solution is correct
She marks their class works, makes corrections where necessary and commends them positively 

PERIOD 3: Subtraction
PRESENTATION  TEACHER’S ACTIVITY  PUPIL’S ACTIVITY 
STEP 1 ORAL ASSESSMENTS  The teacher asks questions on mental maths with 2digit numbers treated so far  Pupils respond and participate 
STEP 2 DISCUSSION  The teacher discusses all the methods used by some learners in the oral assessments(some of the questions are solved on the board by the learners) and addresses any misconceptions that may have risen  Pupils pay attention and participate 
STEP 3 WRITTEN ASSESSMENTS  1 Solve the following using simplified pictorial a. 117  68 = b. 133  94 = c. 171  99 = d. 133  85 =
2. Solve the following using the column method a. 103  64= b. 178  89 = c. 165  89 = d. 143  86 =
 Pupils attempt their class work 
STEP 4 SUMMARY  The teacher marks the written assessments, corrects were necessary and commends the pupils 

PERIOD 4: Addition and Subtraction using column method
PRESENTATION  TEACHER’S ACTIVITY  PUPIL’S ACTIVITY  
STEP 1 MENTAL MATHS  The teacher begins the lesson with some mental calculations Calculate 1. 100 + 45 = 2. 300 + 53 = 3. 500 + 67 = 4. 700 + 82 = 5. 900 + 5 = 6. 245 – 45 = 7. 464 – 64 = 8. 628 – 28 = 9. 853 – 53 = 10. 709 – 9 =  Pupils respond and participate  
STEP 2 CONCEPT DEVELOPMENT  The teacher writes 12 + 35 = _____ on the board and asks the learners to solve the question using column method in their class work book
Solution
The teacher writes 512 + 35 = ______ on the board and asks the learners to solve the question using the column method in their class work book
Solution
The teacher writes 38 – 25 = _____ on the board and the learners are to provide the solution in their class work books
Solution
The teacher writes 438 – 25 = _____ on the board and the learners are to provide the solution in their class work books
Solution
Learners in pairs are to solve the following 314 + 73 = 576 – 34 =  Pupils pay attention and participate  
STEP 3 CLASSWORK  Solve the following using column method a. 352 + 44= b. 463 + 24 = c. 327 + 51= d. 546 + 23 = e. 713 + 55= f. 295 – 31 = g. 479 – 46 = h. 589 – 54 = i. 672 – 62 = j. 899  98  Pupils attempt their class work  
STEP 4 HOMEWORK  Solve the following using column method a. 737 + 51 = b. 327 + 22 = c. 376  32 = d. 654 – 42 =  The pupils writes it in their homework book  
STEP 5 SUMMARY  The teacher reminding the pupils how simple addition subtraction problems were solved using column method
She marks the class work, make corrections where necessary and commends the pupils positively


PERIOD 5: Weekly Test/consolidations
TEACHER’S ACTIVITY: The teacher revises all the concepts treated from period 14 and gives the pupils follow through exercises, quiz and tests . She marks the exercises, makes corrections and commends the pupils positively.
PUPIL’S ACTIVITY: The pupils work on the worksheets and exercises given by the teacher individually
ASSESSMENT
1 Solve the following using the column method:
a 43 + 68 =
b 88 + 74 =
c 146 – 77 =
d 191 – 45 =
f 103 – 8 =
2 Solve the following using the simplified pictorials:
a 52 + 79 =
b 146  129 =
3. Solve the following using any method of your choice. Include a check for correct answers in the end
a 542 – 19 =
b 381 – 49 =
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