Students discover the differences between P- and S-waves using a slinky. They see that when displacement occurs along a fault, the built up strain of energy is released in the form of seismic waves.

Readers use context to determine the meaning of words found in a short article about earthquakes and the movement of the earth's crust.

Students 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 tectonics....

Tenth graders explore and define the radius and diameter of a circle. In this geometry instructional activity, 10th graders calculate the circumference and area of a circle using real world objects and shapes. They discuss chords...