Radiation has numerous real-world applications, some of which are relatively safe while others can be extremely hazardous. In this nuclear chemistry project, young scientists choose a practical use of nuclear reactions to...

High schoolers demonstrate rates of decay of unstable nuclei can be measured. They understand ratios and multiplication of fractions. They simulate radioactive decay. They read about the accomplishments of scientists.

Students investigate the rock cycle. In this geology lesson, students read about the rock cycle on a website and discuss the steps of the rock cycle. Students visit a rock cycle website to complete a quiz. This is the first introductory...