High School Math

David Chandler

Welcome to High School Math Resources

David Chandler, whom you can meet below, has shared with us four high school math resources exploring finding area, the Pythagorean Theorem, and pi. These resources are full of challenging problems. Give them a try if you dare!

Finding Areas Using Reasoning

Pythagorean Theorem

Finding Areas Without Formulas

Lesson on Pi

David Chandler is author of the Home Study Companion series. David loves to teach mathematics! He has a BS from Harvey Mudd College (independent major combining physics and engineering), an MA in Education from Claremont Graduate University, and an MS in Mathematics from Cal Poly University.

David has taught physics, mathematics, astronomy, and computer programming in public, private, international, and charter schools and community colleges since the early 1970s. He currently teaches at Eleanor Roosevelt Community Learning Center, a K-12 charter school that works with homeschooling families. Working with homeschoolers has led David to see the need for supplementary materials like his Math Without Borders program.

One of his more interesting projects at his school is designing a mixed grade level course called Math Explorations (for 2nd grade through Junior High). Math Explorations involves “precursor activities” that don’t necessarily look like mathematics. His students do puzzles, mazes, perspective drawing, distorted photographs, and a lot of other fun and fascinating stuff. It’s not about math skills, per se. It’s about how the brain is wired! David says: “This is the kind of thing I can do at a charter school working with homeschoolers that I couldn’t possibly get away with in a standard public school.”