Here's a resource ideal for independent learners who need extra reinforcement or would like to work ahead. These textbook chapters and practice problems cover many basic physics concepts, starting with potential and kinetic energy and...

In this eighth-grade science standardized test practice activity, pupils answer 78 multiple-choice and short-answer questions to review their knowledge.

Young scientists build on their previous knowledge and apply it to coronal mass ejections. By plotting the path of two different coronal mass ejections, they develop an understanding of why most don't collide with Earth.

Carbon is in the air; should we care? Teach the class why it is important to pay attention to carbon levels and how the world population and various countries across the globe affect the carbon levels in the atmosphere. High schoolers...

Young scholars explore the Earth's movements by completing worksheets. In this plate tectonics lesson, students define such natural disasters as volcanoes, earthquakes, tsunamis and mudslides and discuss their connections to plate...