Explore Thorn Creek by taking measurements and doing experiments to learn some of the properties of water. Then we’ll walk the waters of the creek and observe what lives there. We’ll discover how many of these organisms transform to live on the land! Wear old clothes and boots. Participants can enjoy a 1-mile hike on natural surface trails across uneven and possibly muddy terrain.

Sunday, July 9. 1–3 p.m. Free! Ages 5–12. Children younger than 6 years must be accompanied by an adult. Registration required by Friday, July 7. Call 708-747-6320.