We have a few who've just shown up on their own, but my friend Paul Goldenberg (my own nominee for best educator) has a project using Snap! with second graders,

We have a few who've just shown up on their own, but my friend Paul Goldenberg (my own nominee for best educator) has a project using Snap! with second graders, not to teach programming but to teach mathematics using Snap!-based microworlds.