We are in full double digit learning mode at our house. Tiffany who is almost 4 can identify numbers 1-10 but after that she gets mixed up. So, we are using lots of different ways to help get better acquainted with our double digit number friends.
One of the ways is by using empty play doh containers/cups which make great learning tools for learning double digits. You could probably use plastic cups as well like the ones restaurants serve to kids. Since we are focusing on 10-19 those are the numbers I included but you could do it for 20's 30's, etc. Simply use a permanent marker or stickers and write the number 1 (or whatever set of numbers you want to use) on one of the containers and write the other numbers on the other container. The cups spin very easily without any effort and your child can do this practically anywhere! Throw them in a busy bag or quiet bin, keep them in the car or your purse.
What do you re-use for learning activities with your children?