Reviewers found a mismatch between the exploratory nature of the Pythagorean Explorer applet and the didactic procedures suggested in the lesson. Most teachers will prefer to use the applet with a more guided discovery approach. Exploration questions and an extension are included. (sw)

The three interactive, online learning activities in this lesson enable students to apply Pythagorean theorem and investigate the angles and the lengths of the sides of right triangles. The online materials can help all students, but particularly the visual learner, reinforce their understanding of the theorem and see how side length relates to area and perimeter in right triangles. The measurement skills used in this lesson are especially important to career-technical students in the Construction and Engineering & Science Technologies fields. (jrs)