Activity
Howard Hughes Medical Institute

Distribution of Elements in Earth’s Crust

For Students 9th - 12th Standards
How do scientists know the difference between a meteorite from space and a regular rock from the earth? Scholars read a passage and answer comprehension questions about the creation of the solar system. They extrapolate the main ideas to...
Worksheet
Curated OER

Observation and Inference

For Students 9th - 12th Standards
Assess your young scientists' understanding of the difference between observation and inference with this 20-question multiple choice quiz. It reviews a variety of physics and astronomy concepts, such as solar eclipses and sunspots, the...