Khan Academy
Khan Academy: Evaluate Sequences in Recursive Form
Find the first few terms of sequences that are defined recursively. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Algebra I: Evaluate Piecewise Functions
Given the formula of a piecewise function, evaluate it for a specific input. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.