Game 3N3: Operations Multiplication

Game 3N3: Operations – Multiplication Strand: Number Strand Unit: Operations – Multiplication Curriculum Objectives Covered:  Develop an understand...
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Game 3N3: Operations – Multiplication Strand: Number

Strand Unit: Operations – Multiplication

Curriculum Objectives Covered:  Develop an understanding of multiplication as repeated addition and vice versa  Explore, understand and apply the zero, commutative and distributive properties of multiplication  Develop and/or recall multiplication facts within 100  Multiply a one-digit or two-digit number by 0 – 10  Solve and complete practical tasks and problems involving multiplication of whole numbers.

Part 1: “Lucky Dip” Aim: For each child on each team to form multiplication patterns, and for his/her team mates to correctly identify the number sentences. Activity Area: Classroom Duration: 10 minutes Resources:  Sample pattern of stars (attached) for discussion before the game begins  Set of multiplication cards per group of 5 children (photocopiable set of cards attached)  Feely bag/ large coloured sock per group of 5 children  Tub of plastic counters per group of 5 children Set Up: 1. Before the game begins, the children should be shown this sample pattern of stars (larger version attached) in order to remind them of multiplication as repeated addition, and of the commutative and distributive properties of numbers.

* * * * * * * * * * * * 2. During the discussion, the children should be guided towards noticing the various different ways in which these 12 stars can be described, namely a) 4 + 4 + 4 = 12 (repeated addition) b) 3 + 3 + 3 + 3 = 12 (repeated addition when card is turned on its side)

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c) 3 x 4 = 12, and when turned on its side 4 x 3 = 12, therefore 3 x 4 = 4 x 3 (commutative property) d) 3 x 4 = (2 x 4) + (1 x 4) or 3 x 4 = (1 x 4) + (2 x 4) (distributive property) 3. The children’s attention should also be drawn to the fact that anything multiplied by 0 will always amount to 0 (zero property). 4. To play the game, the class is divided into small groups of 5 children per group. Start Playing: 1. The first child in each group pulls a card from the feely bag/sock. 2. He/She then uses the counters to make that multiplication pattern on the desk. 3. The other children in the group, one at a time, work out the number sentence by looking at the pattern of counters. 4. Each child must say a different 1 of the 4 possible answers on the card. 5. When the 4 answers are found, the second child pulls a new card from the bag, and steps 2-4 (above) are repeated. 6. The game continues until the time limit is reached.

Part 2: “Quick-fire Knockout” Aim: To quickly answer head-to-head maths questions and win 3-in-a-row. Activity Area: Classroom Duration: 20 minutes Resources:  Set of teacher questions for quick-fire answer races (attached). Set Up: 1. This is a quick-fire, knockout style game for the whole class. 2. Two children stand at the top of the class for the first head-to-head challenge. Start Playing: 1. The teacher asks a question and the first child to call out the correct answer wins. (The children can choose to work out the answer mentally or can use the whiteboard and a marker if preferred.) 2. The child who has been knocked out sits down, and the next challenger comes to the front to take his/her place. 3. When any child ‘knocks out’ his/her third opponent in a row, he/she can then receive a house-point/reward, depending on the teacher’s own reward system in the classroom. 4. Both children then sit down, and 2 new challengers come to the front. 5. The game continues until each child in the class has had a turn. 6. The last child standing also gets a house-point/reward, even if it’s only the first or second win.

Copyright Ann Moran

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Game 1: Cards 3 x 6 = 18 6 x 3 = 18 6 + 6 + 6 = 18 3 + 3 + 3 + 3 + 3 + 3 = 18

5 x 4 = 20 4 x 5 = 20 4 + 4 + 4 + 4 + 4 = 20 5 + 5 + 5 + 5 = 20

2 x 8 = 16 8 x 2 = 16 8 + 8 = 16 2+2+2+2+2+2+2+2 = 16

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1x9=9 9x1=9 9=9 1+1+1+1+1+1+1+1 +1=9

4 x 7 = 28 7 x 4 = 28 7 + 7 + 7 + 7 = 28 4 + 4 + 4 + 4 + 4 + 4 + 4 = 28

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1x4=4 4x1=4 4=4 1+1+1+1=4

4 x 8 = 32 8 x 4 = 32 8 + 8 + 8 + 8 = 32 4+4+4+4+4+4+4+4 = 32

10 x 10 = 100 10 x 10 = 100 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 = 100 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 = 100 ********** ********** ********** ********** ********** ********** ********** ********** ********** ********** 6 x 7 = 42 7 x 6 = 42 7 + 7 + 7 + 7 + 7 + 7 = 42 6 + 6 + 6 + 6 + 6 + 6 + 6 = 42

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5 x 5 = 25 5 x 5 = 25 5 + 5 + 5 + 5 + 5 = 25 5 + 5 + 5 + 5 + 5 = 25

8 x 9 = 72 9 x 8 = 72 9+9+9+9+9+9+9+9 = 72 8+8+8+8+8+8+8+8 + 8 = 72 ********* ********* ********* ********* ********* ********* ********* ********* 9 x 2 = 18 2 x 9 = 18 2+2+2+2+2+2+2+2 + 2 = 18 9 + 9 =18 ** ** ** ** ** ** ** ** **

3 x 7 = 21 7 x 3 = 21 7 + 7 + 7 = 21 3 + 3 + 3 + 3 + 3 + 3 +3 = 21

4 x 6 = 24 6 x 4 = 24 6 + 6 + 6 + 6 = 24 4 + 4 + 4 + 4 + 4 + 4 = 24

5 x 8 = 40 8 x 5 = 40 8 + 8 + 8 + 8 + 8 = 40 5+5+5+5+5+5+5+5 = 40

7 x 5 = 35 5 x 7 = 35 5 + 5 + 5 + 5 + 5 + 5 + 5 = 35 7 + 7 + 7 + 7 + 7 = 35

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6 x 10 = 60 10 x 6 = 60 10 + 10 + 10 + 10 + 10 + 10 = 60 6+6+6+6+6+6+6+6 + 6 + 6 = 60 ********** ********** ********** ********** ********** **********

Copyright Ann Moran

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3 x 8 = 24 8 x 3 = 24 8 + 8 + 8 = 24 3+3+3+3+3+3+3+3 = 24

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Game 2: Teacher Questions

1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30.

Doubles: 2 x 9 = 18, therefore 4 x 9 = 36. What is 8 x 9? 72 How many days are in 7 full weeks? 49 34 x 8 = ? 272 9 x 2 = ? 18 How many days are in September, April, June and November combined? 120 4 x 72 = ? 288 Trebles: 3 x 5 = 15, therefore 9 x 5 = ? 45 3 x 7 = ? 21 21 x 7 = ? 147 A shopkeeper got a delivery of 7 cases of chocolate bars. If each case contained 32 bars, how many bars did the shopkeeper receive? 224 34 x 0 = ? 0 Trebles: 3 x 3 = 9, therefore 9 x 3 = ? 27 There were 9 rows of dots in a pattern with 16 dots in each row. How many dots were in the pattern altogether? 144 9x0=?0 92 x 3 = ? 276 Doubles: 4 x 6 = 24, therefore 8 x 6 = ? 48 There were 7 busloads of children going to a match. If each bus held 47 children, how many children were going to the match? 329 8 x 29 = ? 232 5 x 6 = ? 30 There were 8 classes in a school, with 24 children in each class. How many children were in the school altogether? 192 78 x 2 = ? 156 10 x 1 = ? 10 A shipment of fruit contained 92 bunches of bananas. If there were 6 bananas on each bunch, how many bananas were there altogether? 552 A packet of sweets contains 12 sweets. If 7 of these packets were emptied into a bowl, how many sweets would be in the bowl? 84 Doubles: 5 x 7 = 35, therefore 10 x 7 = ? 70 Joan, Susan, Maria and Pauline each had 14 marbles and Roz had 12. How many marbles did the children have altogether? 68 Trebles: 2 x 8 = 16, therefore 6 x 8 = ? 48 65 x 6 = ? 390 If there were 12 cars in a traffic jam with 3 people including the driver in each car, how many people were held up in the traffic jam altogether? 36 0 x 56 = ? 0

Copyright Ann Moran

Copyright Ann Moran