Curated OER
The Notorious Four-Color Problem
Take a walk through time, 1852 to 2005, following the mathematical history, development, and solution of the Four-Color Theorem. Learners take on the role of cartographers to study a United States map that is to be colored. One rule: no...
Curated OER
Places and Production
Students investigate the economy and the market value of goods. For this algebra lesson, students differentiate between domestic goods value and international good value. The define and identify the importance of GDP or Gross Domestic...