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(Grab 1 of each sheet off the computer cart) GOFORMATIVE!!! (Grab 1 of each sheet off the computer cart)

Squares + Square Roots CCSS.MATH.CONTENT.8.EE.A.2 I can evaluate the square root of a perfect square and the cube root of a perfect cube CCSS.MATH.CONTENT.8.NS.A.2 I can use estimate values to compare two or more irrational numbers.

Use cheez-its to make perfect squares

Cheez-it Activity *Each team will be given a cup of crackers (don’t eat these, they're dirty) *Make as many different size squares as you can and record on the graph paper. 1 cheez-it makes a square 2 cheez-it DOES NOT make a square

Transfer your findings to the graphic organizer. # of squares is the number of cheez-its in your square The root is the number of squares on one side.

Draw an example of a perfect square number Define “square root” In your own words Draw the radical sign Draw an example of a perfect square number

Graph the square roots on the number line: 1 4 9 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

Can you find the mistake? Completed Copy of Graphic Organizer Can you find the mistake? Cool Points if you can! 6 squared = 36

Let’s Practice Perfect Squares

Square Roots Games! http://www.learnalberta.ca/content/mejhm/i ndex.html?l=0&ID1=AB.MATH.JR.NUM B&ID2=AB.MATH.JR.NUMB.SQUA&less on=html/object_interactives/square_roots/u se_it.html

Use cheez-its to make perfect squares But what if we CUT squares? Could we cut the pieces to make 2 cheez-its a square?

Which approximation comes closest? Possible tries: thirds fourths tenths Which approximation comes closest?

http://tube.geogebra.org/m/124656

VOCAB 7 is the square root of 49 7 squared is 49 3 squared is 9 The square root of 9 is 3 3 2 is 9

Square Roots have 2 solutions...Whaaaaattt? A number that produces a specified quantity when multiplied by itself: Square numbers have two of the SAME factors. The square root of 36 could be 6 or -6. 6 x 6= 36 -6 x -6 = 36

If there is no sign in front of the radical, list the positive root.

If there is a +/- sign in front of the radical, list BOTH square roots.

If there is a - sign in front of the radical, list the negative square root.

Fractions: If there is a fraction under the radical, take the square root of the numerator AND the denominator

What number can you square and get -16? Negative under the Square Root-NO SOLUTION