To explore how erosion happens, second graders used zippers and tongue depressors to erode clay rocks. We noticed that the properties of the rocks changed and dust fell as we rubbed them along zipper teeth and tongue depressors!
Eroding Rocks in Materials for the Arts
PS54 The Magnet School for Environmental Science, Technology and Community Wellness 195 Sandford Street Brooklyn, NY 11205 T. 718-834-6752 Fax. 718- 852-8129 