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So cool! Tennenbaum’s visual proof of the irrationality of the square root of 2.

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from Education.com

### Cube Root

Cubed Root: Find the prime factors of the number under the radical; look for groups of 3 of the same number, like 3 - 2's (cubed root of 8) to take out of the radical; if negative, can factor out the -1

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square root of negative one teach math: algebra 2

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This scavenger hunt can be used to review finding the square root of perfect and estimating the square root of imperfect squares Directions: Pri...

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geometryofdopeness: VESICA PISCIS WITH SQUARE ROOT OF 2, 3, 5

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My kids never quite grasped that to find one side of a square you need to find the square root of the area... I like this for them! :)

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FREE Square Roots of Perfect Squares Reference Card - from the square root of 1 to the square root of 400.

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Math = Love: "Best Activity Ever for Reviewing Square Roots"

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Vesica Piscis with Square Root of 2, 3 & 5

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Notes and anecdotes on Irrational Numbers. The history is especially amusing. [Might get the students to look for the square root of 2 by seeing if they can multiply a number by itself and get exactly 2] hint: it's impossible.

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