Curated OER
Rockin? Chalk (Integrating science - make own chalk)
Students use plaster of Paris, talc, and cornstarch to create their own chalk. They hypothesize what mixture of ingredients produce the "best" chalk. Students discuss what they think are the characteristics of the "best" chalk.
Curated OER
Rockin' Chalk
Fourth graders access prior knowledge of rocks and minerals. In this petroglyphs lesson, 4th graders become familiar with artwork on rocks. Students create original artworks using rock art.