TERM: 1^{st} Term
WEEK: 8
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
PERIOD 1: Word problems
PRESENTATION  TEACHER’S ACTIVITY  PUPIL’S ACTIVITY 
STEP 1 MENTAL MATHS  The teacher begins the lesson with some mental calculations Calculate 1. 1 + 15 = 2. 2 + 25 = 3. 3 + 19 = 4. 4 + 45 = 5. 5 + 78 = 6. 3 + 35 = 7. 1 + 42 = 8. 2 + 55 = 9. 4 + 65 = 10. 4 + 78 =  Pupils respond and participate 
STEP 2 CONCEPT DEVELOPMENT  The teacher writes 348 + 26 = on the board. Learners are asked to solve this using simplified pictorials
A learner is asked to show the solution to the question on the board Using simplified pictorial
The process is repeated for 59 + 407 = 941 – 22 = 736 – 27 =
Then the teacher writes the following word problem on the board “There are 129 sweets in the jar. Daniel puts in another 47 sweets. How many sweets are in the jar now?
The teacher then draws the below diagram
The learners are then asked to discuss what the number sentence will be(129 + 47 = ____) Then the learners are allowed to solve the problem using their preferred method 129 + 47 = 176. The teacher explains to the pupils that the word problem is an addition problem since the number of sweets are the ending is more than the number of sweets in the jar at the beginning
The teacher writes the below question on the board There are 267 children on the field. 39 go back to their classrooms. How many children are on the field now?
The teacher draws the below diagram on the board
The teacher asks the learners to think what the number sentence will be(267 – 39 = _____) The learners are then asked to work out the solution 267 – 39 = 228
 Pupils pay attention and participate 
STEP 3 CLASSWORK  1. Solve the word problem using bar diagrams a. The teacher has 342 pencils. The shop down the road gives her 69 more. How many pencils does she have now?
b Theophilous picks up 543 shells. 29 were broken. How many unbroken shells does Theophilous have?  Pupils attempt their class work 
STEP 4 HOMEWORK  1. Solve the word problem using bar diagrams a. Segun picks up 264 pieces of litter. He then picks up another 17 pieces of litter. How many pieces of litter did Segun pick up altogether?
 Pupils attempt their class work 
STEP 5 SUMMARY  The teacher summarizes reminding the pupils of the steps in solving word problems using bar diagrams
She marks their class works, makes corrections where necessary and commends them positively 

PERIOD 2: Revision of addition and subtraction
PRESENTATION  TEACHER’S ACTIVITY  PUPIL’S ACTIVITY  
STEP 1 MENTAL MATHS  The teacher begins the lesson with some mental calculations Calculate 1. 8 + 4 = 2. 3 + 9 = 3. 7 + 5 = 4. 4 + 8 = 5. 6 + 6 = 6. 14 – 5 = 7. 15 – 6 = 8. 16 – 7 = 9. 17 – 8 = 10. 18 – 9 =  Pupils respond and participate  
STEP 2 CONCEPT DEVELOPMENT  The teacher writes 351 – 35 = on the board. Learners are asked to solve this using the column method
A learner is asked to show the solution to the question on the board Using simplified pictorial
The same process is repeated for these 1. 673 – 47 = 2. 145 – 136 = 3. 107  28 =
 Pupils pay attention and participate  
STEP 3 CLASSWORK  1. Use column method. Ensure to use the check to see whether or not the answer is correct a. 142 – 74 = b. 125 – 46 = c. 687 – 59 = d. 574 – 35 = e. 105 – 58 =
 Pupils attempt their class work  
STEP 4 HOMEWORK  1. Use column method. Ensure to use the check to see whether or not the answer is correct a. 126 – 89 = b. 843 – 29 =  Pupils attempt their class work  
STEP 5 SUMMARY  The teacher summarizes reminding the pupils of the steps in carrying out subtraction using the column method and how to check whether the solution is correct
She marks their class works, makes corrections where necessary and commends them positively 

PERIOD 3: Addition and Subtraction
PRESENTATION  TEACHER’S ACTIVITY  PUPIL’S ACTIVITY 
STEP 1 ORAL ASSESSMENTS  The teacher asks questions on mental maths with 2 and 3digit 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 the column method a. 58 + 59 = b. 96 + 27 = c. 156  69 = d. 882  65 = e. 106 – 9 =
2. Check to see if these subtractions are correct by adding them a. 487 – 28 = 437 b. 262 – 48 = 214
3. Richard has N328. His mother gave him N48. How much does he have now?
4. There are 421 mails in my email box. I deleted 64 mails. How many am I left with?
 Pupils attempt their class work 
STEP 4 SUMMARY  The teacher marks the written assessments, corrects were necessary and commends the pupils 

PERIOD 4: Finding the missing number
PRESENTATION  TEACHER’S ACTIVITY  PUPIL’S ACTIVITY 
STEP 1 MENTAL MATHS  The teacher begins the lesson with some mental calculations Calculate 1. 3 + 8 = 2. 4 + 9 = 3. 5 + 7 = 4. 6 + 8 = 5. 7 + 6 = 6. 7 + 4 = 7. 8 + 8 = 8. 8 + 5 = 9. 9 + 7 = 10. 9 + 8 =  Pupils respond and participate 
STEP 2 CONCEPT DEVELOPMENT  The teacher asks the learner to follow the below problem:
I am thinking of a number. When I take 9 away from the number, my answer is 10. What number am I thinking of? __19__  9 = 10 The teacher asks the learners to discuss their answers and how they got it
The teacher writes another problem on the board: There were some learners in a classroom. 3 learners went out. Another 5 learners went out. Now there are 11 learners left in the classroom. How many learners were there at the beginning? The teacher writes the below sentence
 Pupils pay attention and participate 
STEP 3 CLASSWORK  Complete the following. You may want to draw a number line to help you 9. What number do we add to 2 and 8 to get 15? 10. What number do we add to 8 and 9 to get 20?  Pupils attempt their class work 
STEP 4 HOMEWORK  Complete the following  The pupils writes it in their homework book 
STEP 5 SUMMARY  The teacher reminding the pupils how addition can be used to solve subtraction problems 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
What number am I thinking of? ___
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