For grown-ups
Each number is a set of track pieces: orange plus blue. Your child taps how many pieces the track will have, and the basket waits where a track that long would end. Too few and the car rolls past the basket; too many and it drops off before it. Right, and it lands in the basket and goes on the prize shelf. The equation only ever shows the right answer; a missed sum comes back a few turns later.
Free to use. Made by HomeLearners.org
Ten cars! You are a super adder!