Measure and estimate lengths in standard units.

How Do You Measure an Object in Inches Using a Ruler?

Measuring is a building block of math and understanding the world around us. This tutorial shows you how to measure an object in inches using a ruler.
How Do You Measure an Object to the Nearest Centimeter Using a Ruler?

Rulers help you measure all sorts of things, but you need to learn how to use it first! Follow along with this tutorial to see how to use a ruler to measure objects in centimeters.
How Do You Measure an Object in Millimeters Using a Ruler?

Knowing how to use a ruler is an important skill in both math and the real world! Follow along with this tutorial to see how to use a ruler to measure an object in millimeters!