"A non-fiction introduction to the massive scale of the known universe"--

"Paul Andersen explains how the amplitude of a wave is a measure of the energy of the wave. He gives several examples of wave amplitude and shows you how to calculate the wave of a transverse and longitudinal wave."--

"In this lesson you will learn to cover the area of a shape by using square units."--

"In this lesson, you will learn how to find angle measurements using vertical angles."--

If you need to build your skills in basic measurement, this practice is for you: covering time and temperature, weight and mass, and capacity, it will also help you learn about linear measures using American and metric units.

Improve your skills in measurement with this instantly scored practice set. It offers complete answer explanations for each question and a detailed score report that measures your understanding of everyday measurement and conversion concepts.

If you need to build your skills in basic measurement, this practice is for you: covering time and temperature, weight and mass, and capacity, it will also help you learn about linear measures using American and metric units.

"Paul Andersen explains how the energy of a wave is directly related to the amplitude of a wave. The wave energy of a sound wave is the volume of the wave."--

Do you grasp the basics of measurement? Find out with this instantly scored practice set. Complete answer explanations for each question help you work through each problem, and a detailed score report will help you identify areas that need work.

"In this lesson, you will learn how to solve real-world problems with surface area."--