Khan Academy
Khan Academy: Algebra I: Compare Quadratic Functions
Compare the properties of two quadratic functions, each represented in a different way. Students receive immediate feedback and have the opportunity to try questions repeatedly or receive hints.
Khan Academy
Khan Academy: Graph Quadratics in Factored Form
Graph quadratic functions that are given in factored form. For example, graph y=(x-4)(x+2). Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.