University of Colorado
University of Colorado: Ph Et Interactive Simulations: Bending Light
Manipulate variables and measure angles as light is refracted in this interactive simulation.
Scholastic
Scholastic: Solving the Unknown With Algebra
Young scholars will learn and reinforce skills for solving for unknowns, manipulating equations while keeping them in balance, using formulas to solve real-world challenges, and working with proportions, radicals and exponents.
Other
Alverno College: Ps Aqua Farm: The Aquafarmer: Your Role in This Lab
Using this simulation become the manager of a real-life fish farming operation. Make money by raising fish manipulating dependent and independent variables.