I recently stumbled across this website that promotes creating playful learning experiences and spaces for children. There is a link for learning experiences that has different ideas for areas such as math, literacy, science, etc. I only had time to look at a few, but here are some ideas that I loved: alphabet pebble magnets, leaf family, and everybody needs a rock.
There is also a link for resources that contains a plethora of websites for different subject areas. This website looks like an excellent resource for both parents and teachers! I will add it to the learning resources section for future reference.