Week+2


 * Week 2: Geometric Tools**

By focusing on a series of constructions of triangle centers, participants learn how to create custom tools in Sketchpad as well as action buttons and animations.

Visual Media: Activities: Euler Segment Project: Use custom tools to investigate the relationships between triangle centers.
 * "Triangle Centers" JavaSketch
 * Interview with Nick Jackiw, "Sketchpad's Design"
 * Interview with Mary Wiltjer, "Student Learning with Sketchpad"
 * Video demonstration with Janet Bowers, "Custom Tools"
 * Tour 3: String Art
 * Tour 4: A Bestiary of Quadrilaterals
 * Altitudes in a Triangle
 * Medians in a Triangle
 * Perpendicular Bisectors in a Triangle
 * Angle Bisectors in a Triangle

Journal Prompt: Participants are asked to reflect on how Sketchpad's design make it an effective tool for learning mathematics and how custom tools fit into this design philosophy.