I learned many years ago that the most effective way of keeping math engaging for students is through SELECTIVE PROBLEM SOLVING. All kinds of problem solving...not just traditional "solve this equation" problems. I will offer teachers ideas for keeping kids excited about math. Such as...building a probability distribution of outcomes from throwing dice...constructing a pendulum that will draw Lissajous figures...constructing a Foucault pendulum...how to do interesting large-scale astronomical