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!
Spatial Sense - Sticker Names Toddler Activity: What an awesome indoor activity for toddlers. A great quick and easy activity that toddlers and preschoolers will love! Fine motor skills activity for toddlers.