CK-12 Foundation
Slope: Danger Mountain
There's no danger in using an exciting resource. Pupils use an interactive to change the slope of a sledding path and see how the equation changes. They then apply information about safe slopes to see if their sledding paths are...
Curated OER
Inclined Plane
Students using clay and a toothpick, shape the clay into a "mountain" upon which they make a road that is the shortest in distance. They measure the length of their road and then make a road that is the longest in distance without...
101 Questions
Gas Light
You don't want to leave any learners stranded! Explore ratios using an analysis of gas mileage and distance. Given a scenario, individuals must determine if a car has enough gas to make it to the next gas stop.
Other
Backtracking: An Interactive Tessellation Game
Click on the squares to move the tiles and create the correct pattern. A fun way to explore the concept of tessellations.
PBS
Pbs Online News Hour Extra: u.s. Economy Officially in a Recession
The verdict is in and the U.S. is in a recession. Find a succinct explanation of the 2008 recession and backtrack to the Great Depression. Follow up with discussion questions and a lesson plan complete with a glossary of terms. December...
Mathigon
Mathigon: Graphs and Networks: The Travelling Salesman Problem
This lesson focuses on the traveling salesman problem which involves finding paths through a city without backtracking. While no algorithm has been found to do that for all cities, there are algorithms that help somewhat. They are...