Square+Roots

=**Square Roots Exploration**=

Square Roots This is an example of a spreadsheet that we used to explore squares and square roots.

In the first set of data, students entered in the numbers themselves (using a calculator when appropriate).

From this exploration, students should be able to identify the numbers that are "perfect" squares. Students can also use this table as a tool to estimate the square root of numbers that are not perfect.

In the second table, students used the square root and squaring formulas in Excel to get the values for numbers between -1 and +1. From this data, students will see that for negative numbers, the square root function returned an error (imaginary number). When these values are graphed, interestingly, they converge at one point: (1,1). From the graph, you can also discuss about the properties of square root and quadratic functions.

**//Pages Created by Kathleen L Post//** stampinpost@yahoo.com