Training teachers to use playgrounds in physics teaching

Climbing racks, carousels, swings and slides can be used for many experiments and demonstrations that offer suprising results, often challenging students' understanding of motion. This paper describes activities used in professional development workshops for teachers on the use of playgrounds in physics teaching. Toys and other simple equipment complement the experience of the body. In addition, smartphones can be used both for documentation and measurements. The activities emphasize how playground experiments can connect very concrete experiences of acceleration and force to textbook examples and fundamental physical principles