Curated OER
Discovering Euler’s Formula for Planar and 3D Figures
In this Geometry activity, 10th graders investigate the number of regions, edges, and vertices of sixteen planar figures in order to discover Euler’s Formula. The two page activity contains a chart for the results of the...
National Council of Teachers of Mathematics
The Math Forum: Imaginary Exponents and Euler's Equation
"What does it mean to have an imaginary exponent?" This site has an exceptional answer and explains it in two different ways