Lesson 12: Volume and Capacity - Let's measure liquids!

For Grade 4 Students (Ages 9-10) - Let's learn about volume, capacity, and units of measurement!

What we will learn today:

In this lesson, you will learn to:

  • Understand the difference between **volume** and **capacity**.
  • Identify common units of capacity: **liters (L)** and **milliliters (mL)**.
  • Convert between **liters and milliliters**.
  • Solve **word problems** involving volume and capacity.

Volume and Capacity:

**Volume** is the amount of space an object takes up. **Capacity** is how much a container can hold. For liquids, we often use capacity.

Units of Capacity:

1 Liter (L) = 1000 Milliliters (mL)

A large water bottle might hold 1 L. A small spoon might hold 5 mL.

Activity 1: Convert Liters to Milliliters!

Convert the given liters to milliliters.

L = mL

Activity 2: Convert Milliliters to Liters!

Convert the given milliliters to liters.

mL = L

Exercises: Volume and Capacity

1. 3 L = mL

2. 5000 mL = L

3. Which holds more: a teacup or a bucket?

4. 2 L 500 mL = mL

Word Problems: Solve using Volume and Capacity

  1. A jug contains 1 L of juice. If you pour 300 mL into a glass, how much juice is left in the jug (in mL)?
  2. A bottle holds 750 mL of water. How many such bottles are needed to fill a 3 L container?

You're doing great!

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