Deeanna Golden, a teacher of 24 years at F.M. Golson Elementary
School in Marianna, Florida, is a beloved Illuminations lesson plan
writer. So we asked her, "Why do you think it is important to share resources?"
Construct perpendicular bisectors, find circumcenters, calculate area, and use proportions to solve a real world problem.
Thank you for your interest in NCTM’s Illuminations. Beginning in mid-April, all Illuminations content will be moving here on nctm.org. Interactives will remain openly available, and NCTM members will have access to all Illuminations lessons, which will contain new filtering and search options. We hope you
will continue to use and enjoy these resources on nctm.org.