... Parent, artist, and garden volunteer Margaret Chavigny created paintings on the playground illustrating the water cycle, plant parts, and a "human sundial" laid out by volunteers, calibrated to the school's exact longitude and latitude. ...
DIY Flagstone Path Tutorial by tracy.skinner.9
Interesting, and doable.
HOME OF HOMEMADE TREASURES: HOMEMADE PLAYGROUND EQUIPMENT
Kids can learn how to garden, get them to be involved with the nature. They could learn about how the plants grow and what do plants need to survive.