Dean Papworth
More ideas from Dean
I've done this with 4th graders and they loved it.  Great for teaching the water cycle.

Teaching the water cycle- terrarium out of empty 2 liter bottle. Perfect size for a small window sill.

Tie rope between trees to create a fun obstacle course for the kids. | 51 Budget Backyard DIYs That Are Borderline Genius

Mud Run Birthday Party - Inspired by the Warrior Dash, an obstacle course for the boys. other boys party themes/ideas on this site as well)