The SSS Theorem: Don’t Assume It, Prove It!
SSS is traditionally a postulate. By following CCSS and defining congruence via transformations, students can prove it. We’ll use Web Sketchpad tools to superpose one triangle on another, and capture the construction steps to create a proof of SSS. This and related lessons are freely available on the Web.
Reconnecting Geometry and Algebra
If you have the honor of teaching algebra or geometry and want to strengthen your students' understandings of critical mathematical concepts related to functions, thus better preparing them for precalc and calculus, this session’s for you. We’ll explore a series of lessons designed to unlock surprising geometry/algebra connections.
This web site is based in part upon work supported by the National Science Foundation under NCSU IUSE award 1712280 (July 2017 through December 2020) and KCP Technologies DRK-12 award ID 0918733 (September 2009 through August 2013). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.
We are deeply grateful to McGraw-Hill Education
for making Web Sketchpad available for these lessons.
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