Small-group support
Rewriting changes form. Evaluating produces a number.
Simplify 2(x + 4) + 3x and then evaluate at x = 2.
Simplifying changes the form. Evaluating produces a number. Doing only one of them answers only one question.
Problem 1 of 4. A short entry task, a model, guided examples, then a new independent try. Frames are optional.