During this activity students will learn how to estimate population size using two techniques, density extrapolation and the mark-recapture method.

Blast a Buick out of a cannon! Learn about projectile motion by firing various objects. Set the angle, initial speed, and mass. Add air resistance. Make a game out of this simulation by trying to hit a target.

Explore forces, energy and work as you push household objects up and down a ramp. Lower and raise the ramp to see how the angle of inclination affects the parallel forces acting on the file cabinet. Graphs show forces, energy and work.

Learn about the physics of resistance in a wire. Change its resistivity, length, and area to see how they affect the wire's resistance. The sizes of the symbols in the equation change along with the diagram of a wire.

Explore your own straight-line motion using a motion sensor to generate distance versus time graphs of your own motion. Learn how changes in speed and direction affect the graph, and gain an understanding of how motion can be represented on a graph.

Build coin expressions, then exchange them for variable expressions. Simplify and evaluate expressions until you are ready to test your understanding of equivalent expressions in the game!

Introductory lesson on solving inequalities that involves application problems, partner work, and which one doesn't belong activities.

Students solve a system of equations based on two situations. Using the Desmos task, students do not need to have prior knowledge of solving a system, but need to know how to write an equation based on a graph. Students determine the cost of swimming using two different situations by interpreting a graph.

This is a practice activity for solving equations with variables on both sides.  It is self-checking, so if students solve their problem carefully and accurately, they will know which problem to solve next.   Once all problems have been completed, the final answer will take students back to the problem they started with.