I suscribe to the NRich newsletter. This site provides tons of math puzzlers and problem solving strategies for all levels of mathematics. This week's newsletter included an advent calendar. Behind every little train "door" is a different activity to do with your class. This morning I started with Day 1. I know, a little late, but at least I'll get six more days in before the break! Day 1 is enough on it's own to get you hooked. The kids absolutely had a blast trying to figure it out. And I h...
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