The Ultimate Guide to Hands On Toddler Activities - Brittany Estes--- This could also work for pre-math skills. Which shape has more or less? I would put on magnets on the back and have a magnetic work space for them to do this activity!
Muffin Pan Fun and other toddler activities months old ---> O'Courter: When he was around 9 months old, I gave my son plastic Easter eggs and a mini muffin tin. He had a lot of fun sorting them in the tin.