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.
NASA
Nasa: Kids: Design an Ion Engine
Four interactive tutorials begin with a basic animation showing the relationship between positive and negative charges. The final test is to build the most efficient ion engine possible by manipulating a series of variables.
University of Toronto (Canada)
University of Toronto: Flash Animations for Physics
This site boasts an extensive list of physics animations that cover topics such as electricity, magnetism, quantum mechanics, and relativity. Variables can be manipulated for each demonstration.
Science Education Resource Center at Carleton College
Serc: Monitoring Pollution in a Freshwater Environment
During this research project, students will choose either the direct method or the indirect method to monitor and measure pollution while manipulating one variable. They will develop a research question to work on and present their...
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Twin Paradox Program
This model permits manipulation of variables in order to observe the effects of time dilation on twin objects, one moving and one not, as shown in a spacetime diagram.
Texas Instruments
Texas Instruments: Numb3 Rs: Angling for Distance
Based off of the hit television show NUMB3RS, this lesson has students manipulate the vector component equations in order to maximize distance for a given initial velocity (using the launch angle as the variable). In an extension,...
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.
Northeast Parallel Architectures Center, Syracuse University
Npac Reu Program: Functions and Graphs
This site from the Northeast Parallel Architectures Center, Syracuse University contains a college level treatment of functions and graphs. Function, element, domain, range, piece-wise functions?? Stuff you know, stuff that's new. Very...