9. Measurement

9.01 Units of mass

9.02 Measure and estimate mass

9.03 Order and compare mass

9.04 Measure and estimate volume

9.05 Order and compare volume

EXPLORE: Volume

9.06 Story problems with mass and volume

9.07 Measure and estimate lengths

9.08 Order and compare lengths

EXPLORE: Length

United States of America Tennessee

Grade 3

9.01 Units of mass

Lesson

Are you ready?

Can you compare how heavy different objects are?

If two objects have very different weights, we can use different units of mass for their measures.

Learn

This video introduces the units of grams, and kilograms and discusses the types of objects that would be measured by these units.

Apply

Which unit is best to measure the mass of this cup of flour?

Grams
A
Kilograms
B

Remember!

The prefix can help with identifying the size of the units.

kilo - means "one thousand of", so a kilogram has $1000$1000 grams.

Outcomes

3.MD.A.2

Measure the mass of objects and liquid volume using standard units of grams (g), kilograms (kg), milliliters (ml), and liters (l). Estimate the mass of objects and liquid volume using benchmarks. For example, a large paper clip is about one gram, so a box of about 100 large clips is about 100 grams.

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