Today we played a game on the 100 chart called Hide the Dinosaur Egg. I took the chart off the wall and turned it so the class couldn't see it, then one child hid a paper dinosaur egg behind one of the numbers. Then we turned the chart around and the children asked more or less questions to find the dinosaur egg. For example, "Is it more than 59?" Then I answered the question and covered all of the numbers that could no longer apply. In this way we narrowed down the 100 chart to find the dinosaur egg. It turned out great, although, if you decide to play the game, make sure you already have tape on the strips you're going to use to cover the chart. I didn't and it took way too long to stick the strips on the first time we played.