# Measurement Students learn how to accurately measure length, volume, and mass. They are also taught the difference between mass and weight. Students calculate density. Students use rulers, graduated cylinders, beakers, and digital scales to obtain measurement data. They record, organize, and analyze data. They reach conclusions about their results and explain discrepancies. Equipment and materials include rulers, measuring tapes, graduated cylinders, beakers, and digital scales.

Lesson 1  Units of Measurement

Students learn about various units of measurement in the areas of length, volume, mass, and density. Students learn how to convert U.S. Customary units to Metric units and vice versa. Students also learn how to convert units within both of those systems of measurement. Students do hands-on measurements to compare calculated conversions to values actually measured.

Lesson 2  Length

Students learn the proper way to measure length in both centimeters and inches. Students also practice measuring several items in the classroom.

Lesson 3  Area

Students learn the definition of area and how to determine area by counting squares inside a shape on grid paper as well as by calculation. Students learn the mathematical formula for area for several different shapes. They also do hands-on measurements and calculations of area for items in the classroom as well as calculating area in word problems.

Lesson 4  Volume

Students learn the definition of volume and the mathematical formulas for finding the volume of various three-dimensional shapes. Students also learn how to find the volume of an irregularly-shaped item. They learn the proper way to measure the volume of liquids and what containers are used to measure liquid volume. They perform a hands-on activity in which they measure the volume of small items through water displacement and then calculate the volume of those same items using mathematical formulas.

Lesson 5  Mass

Students learn the definition of mass and the difference between mass and weight. They also learn the proper way to find the mass of powders and how to use digital scales. Students complete an activity in which they find the mass of small items using digital scales. They also practice taring the scales when they find the mass of water in a beaker.

Lesson 6  Density

Students learn the definition of density and why some materials are denser than others. Students also learn how to calculate density. Students perform a hands-on activity to measure the density of several items. They also do a worksheet in which they calculate the density of items in word problems.