How many triangles can you make with 9 sticks? Or older kids, Who can use these 9 sticks to make the most triangles? Kids can reinforce geometry and critical thinking skills through creating various shapes with sticks.
9 Learning Activities for Outside (and a new After School Linky
DIY Drawing and tracing using shadows: great craft/art for kids too. "Nature and shadow- what if we take out the paints and paint in the lines…."… great idea for tracing. Take a quick pic then don't have to worry about sun changing places.
Finding Symmetry in Nature (Outdoor Math Activity for Kids