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Lesson Plans and Worksheets for Grade 3

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More Lessons for Grade 3

Common Core For Grade 3

Videos, examples, solutions, and lessons to help Grade 3 students learn how to decompose a liter to reason about the size of 1 liter, 100 milliliters, 10 milliliters, and 1 milliliter.

Common Core Standards: 3.NBT.2, 3.MD.2, 3.NBT.8

New York State Common Core Math Grade 3, Module 2, Lesson 9

Concept Development

Which holds more water, a swimming pool or a glass? A swimming pool!

Which holds more water, a swimming pool or a bathtub? A swimming pool!

Which holds the least amount of water, a swimming pool, a bathtub, or a glass?

A glass holds the least amount of water.

The amount of liquid a container holds is called its capacity. The glass has the smallest capacity because it holds the least amount of water.

The amount of water inside a bottle measures 1 liter. A liter is a unit we use to measure amounts of liquid. To abbreviate the word liter use a capital L.

1 liter (L)= 1000 milliliters (ml)

Part 1: Compare the capacities of containers with different shapes and sizes.

Part 2: Decompose 1 liter.

Homework

- Find containers at home that have a capacity of about 1 liter. Use the labels on containers to help you identify them.
- The doctor prescribes Mrs. Larson 5 milliliters of medicine each day for 3 days. How many milliliters of medicine will she take altogether?
- Mrs. Goldstein pours 3 juice boxes into a bowl to make punch. Each juice box holds 236 milliliters. How much juice does Mrs. Goldstein pour into the bowl?
- Daniel’s fish tank holds 24 liters of water. He uses a 4-liter bucket to fill the tank. How many buckets of water are needed to fill the tank?
- Sheila buys 15 liters of paint to paint her house. She pours the paint equally into 3 buckets. How many liters of paint are in each bucket?

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