Forging Connections
NCTM 2019 Presentations with Web Sketchpad

Constructive Proofs: Use Web Sketchpad to Prove SSS and More

Experience proving triangle congruence using a transformation approach. Using Web Sketchpad (WSP) technology, you’ll construct transformations that superpose one triangle on another. With WSP’s ability to capture your construction steps, the proof of the SSS Theorem is “transformed”! Bring a laptop or tablet to try free, classroom-ready lessons.

Not So Complex: A Geometric Approach to Complex Numbers from Addition through Euler’s Formula

Take your understanding of complex numbers to a new level using the dynamic visualization capabilities of Web Sketchpad. We’ll gain mathematical insights into complex number arithmetic, de Moivre’s theorem, and Euler’s formula through applying a geometric transformations approach to these topics.