Activity
Curated OER

Flipping for a Grade

For Teachers 9th - 12th Standards
What happens when your teachers get tired of grading tests and want to use games of chance to determine your grade? How would you decide which game they should play? Learn how to use expected value and standard notation to compare two...
Activity
Curated OER

Rating Systems

For Teachers 9th - 12th Standards
Your favorite sports team is ranked #1. How do the powers that be determine this rating? Learn how ratings are mathematically computed using probability concepts, from the Elo Rating System for chess to the Rating Percentage Index for...