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This interactive activity helps kids review and rewrite basic math sentences through addition and multiplication. They can exchange the position of factors while maintaining the same product and explore the concepts in a playful manner. This exercise focuses on improving math skills while engaging children with a fun learning experience.
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Review Rewrite the sentences 5×7=35 Multiplication 7+7+7+7+7=35 Multiplication 2×9=18 9+9=18 Addition 6+6+6=18 3×6=18 4×4=16 Addition 4+4+4+4=16
In focus The vertical direction: 3 columns, 4 in each column. 3×4 = 4+4+4 = 12 The horizontal direction: 4 rows, 3 in each row. 4×3 = 3+3+3+3 = 12
Let’s learn 3 columns 4 rows 3×4 =12 4×3 =12 3 in each row 4 in each column 3×4 = 4×3 Exchange the position of two factors, the product is same.
Describe the situation with addition or multiplication. Addition: Multiplication :
Describe the situation with addition or multiplication. ( ) columns, ( ) in each column. Addition: 2+2+2+2+2+2+2+2=16 Multiplication : 8×2= 2+2+2+2+2+2+2+2=16
Describe the situation with addition or multiplication. ( ) rows, ( ) in each row. Addition: 8+8=16 2×8= 8+8=16 Multiplication :
2+2+2+2+2+2+2+2=16 8×2=16 8+8=16 2×8=16 2+2+2+2+2+2+2+2=8×2=2×8=8+8=16
Circle and fill in different way : How many stars in the picture? 7×2=2+2+2+2+2+2+2=14 2×7=7+7=14 2+2+2+2+2+2+2= 7×2= 2×7= 7+7 = 14
Which addition is handy? 2+2+2+2+2+2+2+2=8×2=2×8=8+8=16 2+2+2+2+2+2+2=7×2=2×7=7+7=14 Repeated 7 times Repeated one more time Repeated one more time Repeated 6 times What’s the purpose to learn Exchange? Using Exchange can solve what problem?
Guided Practice 9 2 18 2 9 9 9 = = = 2+2+2+2+2+2+2+2+2= 3+3+3+3+3+3+3= 4+4+4+4+4+4= + × × + + 7 3 3 21 7 7 = = = 7 7 × × + + + = = 6 4 4 = 24 6 6 × × 6 6 6
Write 2 multiplications according to the picture. 3×5=15 2×3=6 5×3=15 3×2=6
Challge If I give you 12 circles, can you arrange them in 2 different ways and write the exchange sentences. □×□=□×□