Justin loves letters and numbers. His ability to count helps make things easier for me at times. He understands first, next, last or #1, #2, #3. He doesn't have the fine art of negotiation down very well. When told that he has a two minute time out, he will often give me a counter offer of five minutes. Whatever works for him!
Poor Justin was having a hard time counting the train track pieces when they were in an oval. He is generally a pretty accurate counter, but since the oval leads back into itself he recounted the same pieces and made it past 20, but not quite to 30.
Tiny, unlike Justin at the same age, understands that the jumperoo is for jumping and not just standing. Ryan does have the advantage of a cheering section though. Go Tiny!