Curated OER
Thunderstorms
Fourth graders investigate the attraction between two different charges to explain the concept of lightning in a thunderstorm.
Core Knowledge Foundation
Weather or Not, Seasons Change
Embark on a year long investigation of the seasons with this 10-lesson earth science unit. After being introduced to different types of weather and the tools used to measure it, young scientists perform fun hands-on activities that...
Curated OER
Water World
Students explore the various steps of the water cycle. They identify the three steps in the water cycle and how they are related. Students describe three ways to conserve water. Students explore the origin of the water source that...