Stable isotopes have helped uncover migratory routes, trophic levels, and the geographic origin of migratory animals. They can be used on land as well as in the ocean and have revolutionized how ...

There are more than 2,000 games available. Students can use these free online lessons to do hands-on, DIY science projects. They can also access free webinars (MEL Academy) where teachers explain ...

Some minerals in rocks and organic matter (e.g., wood, bones, and shells) can contain radioactive isotopes. The abundances of parent and daughter isotopes in a sample can be measured and used to ...

Inquiry in Action is a FREE teacher resource of fully-developed lesson plans in physical science for grades K-5. All Inquiry in Action Lessons: Are aligned to the Next Generation Science Standards ...