The object of the activity is to match the snowman with their hats. Each snowman has a set of base ten blocks value 10-20 on his body. For each value there is a hat with the number 10-20 written on it. This could be used as a center, small group activity, or an individual activity.
The skills addressed are counting base ten blocks, number ID of numbers 10-20 and recognizing formations of numbers 1-9 (with the ones blocks.)
I put together both a color set and a black and white set.