warm up draw arrays: write equations: list factors: product: 12 how many equal groups? 1_ equal...

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Warm Up Draw Arrays: Write Equations: List Factors: Produc t: 12 How many equal groups? 1_ equal groups of ____ make _12_ 12_ equal groups of ____ make _1_ ____ equal groups of ____ make ___ ____ equal groups of ____ make ___ ____ equal groups of ____ make ___ ____ equal groups of ____ make ___ 1, __, __, __, __,12 1 x 12 _________ 12 x 1 _________ _________ _________ 1,444 - 509 456 + 672

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Page 1: Warm Up Draw Arrays: Write Equations: List Factors: Product: 12 How many equal groups? 1_ equal groups of ____ make _12_ 12_ equal groups of ____ make

Warm Up

Draw Arrays:

Write Equations:

List Factors:

Product:

12How many equal groups?

1_ equal groups of ____ make _12_

12_ equal groups of ____ make _1_

____ equal groups of ____ make ___

____ equal groups of ____ make _______ equal groups of ____ make _______ equal groups of ____ make ___

1, __, __, __, __,12

1 x 12 _________

12 x 1 _________

_________

_________

1,444 - 509

456 + 672

Page 2: Warm Up Draw Arrays: Write Equations: List Factors: Product: 12 How many equal groups? 1_ equal groups of ____ make _12_ 12_ equal groups of ____ make

Ten Minute Math

Today's Number: 471• Students create an expression to equal 471

using addition and subtraction. • For example: 471= 600-200+50+30-9 and

300+150+21=471 • How can you be sure this expression equals

471? • Explain your strategy so that the rest of the class

can understand it. • Describe and write about your strategies.

Page 3: Warm Up Draw Arrays: Write Equations: List Factors: Product: 12 How many equal groups? 1_ equal groups of ____ make _12_ 12_ equal groups of ____ make

Target the Question

• Elias runs a concession stand at the football stadium. The chart shows the cost of the items that Elias sells.

• Akasha bought 4 sodas. What is the least/most amount of money she could have spent?

Item Cost

Hot Dog $2

Nachos $3

Popcorn $1

Pickle $0.50

Small Soda $1

Med. Soda $2

Lg. Soda $3

Page 4: Warm Up Draw Arrays: Write Equations: List Factors: Product: 12 How many equal groups? 1_ equal groups of ____ make _12_ 12_ equal groups of ____ make

Array Cards1. How can we find the products

represented by these arrays? 2. Are there any here that seem

easier then others? 3. What do you already know about

these numbers that could help you figure out how many squares are in each of these arrays?

4. Share strategies

Page 5: Warm Up Draw Arrays: Write Equations: List Factors: Product: 12 How many equal groups? 1_ equal groups of ____ make _12_ 12_ equal groups of ____ make

You may have used:• Skip counting • Remembering patterns for multiplying with 10 and 11 • Just knowing • Reasoning from knowing multiplication combinations

Have students demonstrate where the smaller arrays are located within the larger arrays.

Page 6: Warm Up Draw Arrays: Write Equations: List Factors: Product: 12 How many equal groups? 1_ equal groups of ____ make _12_ 12_ equal groups of ____ make

•Review directions for game and Model.

•Have students divide a blank sheet of paper into two columns, titled “Combinations I Know” and “Combinations I’m Working On.” •As students play the game in pairs, students will place each multiplication expression in the correct column.

Combinations I Know

Combinations I am Still

Working On

Page 7: Warm Up Draw Arrays: Write Equations: List Factors: Product: 12 How many equal groups? 1_ equal groups of ____ make _12_ 12_ equal groups of ____ make

How Many Groups?

1. ____ groups of 8 make 24

2. ____ x 8 = 24

3. ____ groups of 9 make 63

4. ____ x 9 = 63

Draw the groups of 9 that would make 63.

5. How many total Gatorades are shown on the left?

6. Explain how you came up with your answer in writing.

http://images.google.com/imgres?imgurl=http://www.buythecase.net/uploads/products/200/5200020809.jpg&imgrefurl=http://www.buythecase.net/product/6770/gatorade_frost_riptide_rush_thirst_quencher_sports_drink_20_oz/&usg=__RqTS7LtY7Xg5qAdaJ4WChImwrhA=&h=200&w=200&sz=29&hl=en&start=29&um=1&tbnid=kY0-J_vYFIxB_M:&tbnh=104&tbnw=104&prev=/images%3Fq%3D24%2Bcase%2Bof%2Bgatorade%26ndsp%3D20%26hl%3Den%26sa%3DN%26start%3D20%26um%3D1

Page 8: Warm Up Draw Arrays: Write Equations: List Factors: Product: 12 How many equal groups? 1_ equal groups of ____ make _12_ 12_ equal groups of ____ make

ClosureDiscuss “Another Array Picture.”

In this picture, a case of yogurt containers that

come on packs of 4 has been opened, and some the 4-packs are missing.

How many yogurts were in this case to begin with?

Allow students to work in pairs to solve the problem. Then gather ideas for how to solve the problem, and write them on the board.

Page 9: Warm Up Draw Arrays: Write Equations: List Factors: Product: 12 How many equal groups? 1_ equal groups of ____ make _12_ 12_ equal groups of ____ make

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