# Geometer’s Sketchpad in Action

Mrs. Mayer engaged her students using the dynamic software program Geometer’s Sketchpad. In both of Mrs. Mayer’s 12:1:1 classes, she asked high level questions that challenged her students to think. Her students responded with great answers using appropriate mathematical language and did an amazing job with the program! Mrs. Mayer’s students used Sketchpad to measure the three angles of a triangle. Even though all students in the class had different size triangles, they all came up with the same angle sum–180 degrees! This was a great constructivist lesson that allowed the students to discover mathematics, rather than be told mathematics. Teaching assistants Mrs. Arsenault and Mrs. Hale also did a great job working with students and facilitating conversations.

Students were also challenged to answer the following questions that pushed mathematical thought:

- What is the sum of the angles in a triangle?
- Could we have 2 right angles in a triangle?
- How can you prove that this is an obtuse triangle?

Students commented on how fun Geometer’s Sketchpad was and asked if they could download it on their computers at home. Mrs. Mayer and her students clearly met the learning objectives of the lesson and will likely remember them for a long time. Well done!

Posted on December 9, 2011, in Athena Middle Best Practices and tagged constructivism, Geometer's Sketchpad, Math 6, Mrs. Arsenault, Mrs. Hale, Mrs. Mayer, technology. Bookmark the permalink. 2 Comments.

Thanks for sharing! Always lovely to see and hear how students and teachers are using Sketchpad. Hope to see more.

The biggest obstacle is having the hardware available. Most classrooms simply do not have the resources even if students were to share.