1.) To begin, review how to find the perfect square of a number by playing the following interactive game: http://www.quia.com/cc/65631.html. If using an interactive whiteboard, students may come up to the board and tap to find matching pairs.
2.) Students will watch the demo video on the Pythagorean Theorem (attached)
3.) Use an interactive whiteboard to display the Pythagorean Theorem. Lead a class discussion to see what conclusions the students can draw about the relationship between the sum of the squares of the legs and the square of the hypotenuse.
4.) Divide students into mixed-ability cooperative groups. Groups of three would be ideal for this lesson.
5.) Remind the students that the hypotenuse is the longest length because it is opposite the largest angle. The "right" angle should be between the other two side lengths.
6.) Students will test this theory with different size triangles. Hand out a slip of paper with three lengths on it to each group. Students will use these lengths to build a triangle. They will apply what they saw in the video to this particular lesson. They will build squares off of each side of the triangle and see if it does prove to be a right triangle.
7.) Students will complete attached assignment to assess their understanding of the application of the Pythagorean Theorem.