Collaborating Teachers

Fourth GradeSeptember 11, 2013

Tile Activity

• Count out 12 tiles.• Arrange them so that they form a rectangle.

Tile Activity

Suppose you made this rectangle.

Tile Activity

What multiplication sentence could you write about your rectangle?

Tile Activity

What multiplication sentence could you write about your rectangle?

3 x 4 = 12 (for example)

Tile Activity

Where in your figure do you see the numbers in the math sentence?

Tile Activity

. Where in your figure do you see the numbers in the math sentence?

3

4

1 2 3 4

5 6 7 8

9 10 11 12

Tile Activity

. Where in your figure do you see the numbers in the math sentence?

3

4

1 2 3 4

5 6 7 8

9 10 11 12

We say that the numbers 3 and 4 are factors of 12. the number 12 is a multiple of 3 and a multiple of 4.

Tile Activity

• Can you write a division sentence about your rectangle?

• Where are the factors and multiples in your number sentence?

Tile Activity

• What other rectangle can you make with 12 tiles?

• What factors and multiples does your new rectangle illustrate?

Tile Activity

• Using your 12 tiles make a rectangle with a length of 7.

• Does it work?• Is 7 a factor of 12?• Is 12 a multiple of 7?• Try use your 12 tiles to make a rectangle with

a length of 5. Do you think it will work? Why?

Tile Activity

• What are ALL the rectangles you can make with 12 tiles?

• What are ALL the factors of 12?

Tile Activity

• On another day, do a similar activity with 20 tiles, 24, 30, 36, 48. Try the same activity with 13 tiles.

Factor and Multiple Games Online

1) HoodaMath – Factor Feederwww.hoodamath.com/games/factorfeeder.html

2) nrich Factors and Multiples Gamewww.nrich.maths.org/5468

3) BBC.UK – The Legend of Dick and Domwww.bbc.co.uk/bitesize/ks2/maths/number/factors_multiples/play

More Factor and Multiple Games Online

4) Johnnie’s Math Page – Ghost Multiples, Egg Multiples, and more

www.jmathpage.com/JIMSMultiplicationfactorsandmultiples.html5) Math Playground - Pumpkin Multiples and morewww.mathplayground.com/multiples.html6) Count On- Octopus factorswww.counton.org/games/map-numbers/octopus

Available Dates in October

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