Sequence Game is a classic mixing traditional cards, a board game, and a little bit of Connect Four. I'm always looking at old school games for their possible classroom applications, but I didn't see where this one would be directly educational. Recently, I learned about a new version of the game that you should definitely have in your elementary school classroom (and at home as well).
The Sequence Numbers Game allows students to practice addition and subtraction number facts in the context of an easy to learn game. The game goes like this: each player/team has a handful of these number facts cards. The game board, as you can see in the picture, has color-coded numbers that match the cards. Each turn, you can put one of your chips on the answer to one of the cards in your hand. The object is to get five chips in a row.
I've played this, and watched some students play it as well, and I think this would be a big hit with kids in grades 2-5. It would make a great Christmas present for your favorite elementary teacher or student.
Buy Sequence at Amazon.com