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Problem Solving with

Arrays

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�

I can make sense of a problem involving arrays and persevere to solve it.�
I can use concrete or pictorial models of arrays to help me solve a problem.�
I can generate an equation to match my model.

Learning Targets

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ARRAYS

Items arranged in rows and columns

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A row is the horizontal orientation (side to side).

A column is the vertical orientation (up and down).

Row

Column

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Complete at least one of the following array problems.

If you finish early, try another one. Be prepared to share your work.

5 + 5 + 5 = 15

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Virtual Color Tiles

Color Tiles Virtual Manipulative

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Draw an array with 5 Rows of tiles and 4 Columns of tiles

Write an equation to match the array.

Whether you are distributing paper copies or sending digital copies to the students, you will read the tasks to the students whole group twice.

1st read: Before distributing the handouts.Use the presentation as a visual reference as you read the problem.

After you read the problems, ask the students to think about which problem they would like to attempt first and their first step to solving the problem be. Give them a chance to turn and discuss this with their neighbor. The teacher will listen to their discussion to identify any misconceptions and correct them before the second read. The teacher will then distribute the handouts and proceed to the second reading.

2nd read: After distributing the handouts.

Copy of task: https://docs.google.com/document/d/1FhHmUsXiOo6pK91oGq9KAUdESjT3GdmbmWsliEl6S0w/edit?usp=sharing

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Use what you know about arrays to determine the total number of water bottles in this package.

Prove your answer using tiles or a drawing.

Write an equation to match your model.

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There are 24 cookies in the tin.

Use 24 tiles to create all of the different arrays that total 24.

Draw the arrays you created. Include a description (rows and columns) and an equation for each drawing.

Based on your array drawings and the shape of the tin, how do you think the cookies are most likely arranged in the tin?

24 Cookies

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Student Sharing

Examples of Student Work