Curated OER
Feel the Vibrations
How does sound travel in a string walkie-talkie? Third graders read about the way vibrations act between two cups and a string. Next, they put the steps in order, and experiment with their own walkie-talkies.
Curated OER
Scientific Inquiry
Students create a poster. In this recycling lesson, students discuss pollution and the ways humans negatively affect the environment. Students describe examples of litter or pollution they have experienced. Students collect litter from...