Grade: 5, Topic(s): multiplication/division

## Purpose

Name square number facts 1

^{2 }through 10^{2}

Optional use of diagrams of a 1 × 1 square, 2 × 2 square, 3 × 3 square for student reference

Ask students to complete square number facts such as 4^{2}, 5^{2}, 6^{2}, 7^{2}, and so on.

As in previous activities, you might use name cards to randomize who is selected to answer. This should keep students’ attention, ensure a quick pace, and provide lots of practice when working with a small set of selected facts at a time.

Part 1 asks students to name square number facts 1^{2} through 5^{2}. Part 2 moves on to naming square number facts 6^{2 }through 12^{2 }and encourages students to look for patterns associated with square numbers.

Let’s work on some square number facts by squaring numbers 1–5:

Examples:

- 1
^{2 }(1) - 2
^{2 }(4) - 3
^{2 }(9) - 4
^{2 }(16) - 5
^{2 }(25)

If it’s helpful for children to visualize squaring numbers, have 1 x 1, 2 x 2 and 3 x 3 squares available in the classroom for reference.

*While children are enjoying their building of mastery, feel free to repeat. When children are eager for more, try Part 2.*

Let’s work on some more square number facts. This time we’ll incorporate squaring numbers 6–12.

Examples:

- 6
^{2 }(36) - 7
^{2 }(49) - 8
^{2 }(64) - 9
^{2 }(81) - 10
^{2 }(100) - 11
^{2 }(121) - 12
^{2 }(144)

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