Then they hammer nails or small brads into the board and create a symmetric design using yarn, string, or elastic bands. When the projects are completed, I allow the classes to vote for their three favorites. The winners will receive prizes. Measures of angles, segments, perimeters, and areas of polygons can be computed by the program. To encourage student involvement and collaboration, students worked in groups to complete a worksheet.
Students can use the software to test their conjectures.
Students then draw the triangle and color attractively. The compelted triangles make a nice bulletin board display. Sierpinski's Carpet and the Koch Snowflake are also nice projects for tying the material in the chapter to self-similarity. As we discuss the relationships, they highlight the sides of the triangles in two different colors to show which length is the geometric mean between the other two. The triangles can serve as a quick reference as students study or complete their homework.