Learning how to calculate and solve for Density, Mass, and Volume can be difficult, even for high schoolers. This simple trick teaches a shortcut that can be used to solve for D, M, or V in any order, in any questions. A silly little hand is animated to slide into the picture and manipulate the circular shortcut diagram. "Just cover up the variable that you are trying to solve for" and either divide or multiply the other two that you are given. The saying, "mountains over deserts and valleys" is used to help students remember how to recall the trick on their own and attack density, mass, and volume word problems with ease!