How do you know you know? Prove it! The guide goes through several examples and includes a link to a video to teach learners how to work through coordinate proofs. The goal is to prove that different shapes are indeed that shape. 

This study guide on motion covers some key vocabulary and terms to describe motion: displacement vs. distance, acceleration, speed vs. velocity, and instantaneous vs. average. It includes graphs showing distance vs. time, velocity vs....

This study guide on circular motion covers key terms, centripetal force, linear vs. circular motion, precession, and equations. Includes four example problems with detailed solutions. The guide is available for download with free...

[Free Registration/Login may be required to access all resource tools.] Learn the basics of how to write about literature by asking subjective and objective questions; use tone, diction, and syntax; identify plot elements, and...

[Free Registration/Login may be required to access all resource tools.] Discusses how the flow of water can cause great changes, such as creating the Grand Canyon.

[Free Registration/Login may be required to access all resource tools.] Covers how mountains are formed through the movement of the Earth's plates.

[Free Registration/Login may be required to access all resource tools.] Discusses how changes over time can lead to events such as earthquakes.

[Free Registration/Login may be required to access all resource tools.] Covers reversible and nonreversible changes.

[Free Registration/Login may be required to access all resource tools.] Covers different bodies of water, including rivers, lakes, and oceans.

[Free Registration/Login may be required to access all resource tools.] Covers volcanoes, and the different types of eruptions that can occur from them.

[Free Registration/Login may be required to access all resource tools.] Discusses tidal waves, and how they can very quickly form and cause damage.

[Free Registration/Login may be required to access all resource tools.] Demonstrates how water and wind move soil, which can cause issues for farmers.

[Free Registration/Login may be required to access all resource tools.] Describes how signals from lighthouses are used to communicate over long distances.

[Free Registration/Login may be required to access all resource tools.] Discusses how telescopes are constructed and how they are used to help see the night sky.

[Free Registration/Login may be required to access all resource tools.] Discusses the differences in the physical body parts of different animals.

[Free Registration/Login may be required to access all resource tools.] Discusses patterns seen in the Moon's motion.

[Free Registration/Login may be required to access all resource tools.] Describes patterns that can be found in the movement of the Sun, Moon, and stars.

[Free Registration/Login may be required to access all resource tools.] Explores how light and sound are used by people for communication.

[Free Registration/Login may be required to access all resource tools.] Covers the ways that animals' different features can help them survive.

[Free Registration/Login may be required to access all resource tools.] Explores how light interacts with objects in order to create shadows.

[Free Registration/Login may be required to access all resource tools.] Explores sources and properties of light and its effect on seeing.

[Free Registration/Login may be required to access all resource tools.] Students learn about typical weather patterns and how weather changes with the seasons.

[Free Registration/Login may be required to access all resource tools.] Discusses the force of gravity and how it affects our lives.

[Free Registration/Login may be required to access all resource tools.] Discusses how sounds are created through vibrations.