Measurement and data

When we measure anything, we do it in human-defined 'units'. Different units were defined in different places and for different scales. The two most common are U.S. customary units and metric units. Let's think about how to convert between and among them! We'll also continue thinking about perimeter and area!

Converting units of mass

Learn how convert larger units of mass to smaller units. The metric units used in this tutorial are grams and kilograms. The US customary units in this tutorial are ounces and pounds.

Converting units of volume

Learn how convert larger units of volume to smaller units. The metric units used in this tutorial are milliliters and liters. The US customary units in this tutorial are cups, pints, quarts, and gallons.

Converting units of length

Learn how convert larger units of length to smaller units. The metric units used in this tutorial are millimeters, centimeters, meters, and kilometers The US customary units in this tutorial are inches, feet, yards, and miles.

Converting units of time

Learn how convert larger units of time to smaller units. The units used in this tutorial are seconds, minutes, and hours.