Launch a lesson that's sure to capture middle schoolers' interest! Exploration enthusiasts examine the planets of our solar system using an activity from PBS's Space series. The resource includes images and information for each planet,...

This lesson demonstrates how to find the scale factor. It is 2 of 5 in the series titled "Finding Scale Factors."

This lesson will discuss the relationship between scale factor and surface area of similar figures. It is 3 of 4 in the series titled "Scale Factor and Surface Area of Similar Figures."

This lesson will discuss the relationship between scale factor and volume of similar figures. It is 4 of 4 in the series titled "Scale Factor and Volume of Similar Figures."

This lesson defines the phrase scale factor. It is 2 of 5 in the series titled "Scale Factors."

This lesson will discuss the relationship between scale factor and area of similar figures. It is 3 of 5 in the series titled "Scale Factor and Area of Similar Figures."

This slide show presentation introduces the concept of order-of-magnitude, and how it is used to estimate large values in physics.

A short introduction to the concept of order-of-magnitude, with an explanation of how it is used to make estimations in physics.

This lesson presents the relationship between similar polygons and the ratio of their perimeters. It is 5 of 5 in the series titled "Similar Polygons and their Perimeters."