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.

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...