Lesson 13: Volume and Capacity - How Much Space? How Much Can It Hold?
For Grade 3 Students (Age 9) - Let's explore volume and capacity!
What We'll Learn Today:
Have you ever filled a glass with water or put your toys in a box? Today, we'll learn special words to talk about how much space things take up and how much containers can hold! In this lesson, you will learn:
- What **Volume** means (the space something takes up).
- What **Capacity** means (how much a container can hold).
- About common units for measuring liquids: **Liters (L)** and **Milliliters (mL)**.
What is Volume? - How Much Space an Object Takes Up!
**Volume** is the amount of space that an object takes up. Everything around you has volume! It doesn't matter if it's solid, liquid, or gas, if it's there, it's taking up space.
Example 1: Your Math Book
Your math book takes up space on your desk. That space is its **volume**.
Example 2: A Toy Car
A toy car takes up space on the floor or in a toy box. That space is its **volume**.
What is Capacity? - How Much a Container Can Hold!
**Capacity** is how much a container can hold. We usually use capacity to talk about liquids, like water, juice, or milk.
Example 1: A Water Bottle
A water bottle has a certain **capacity** to hold water. If it's a big bottle, it holds a lot!
Example 2: A Juice Box
A small juice box has a smaller **capacity** than a big water bottle.
Units of Capacity: Liters (L) and Milliliters (mL)!
When we measure capacity, we use special units:
- **Liter (L):** We use Liters for **larger** amounts of liquid.
- **Milliliter (mL):** We use Milliliters for **smaller** amounts of liquid.
When to use Liters (L):
For things like a large bottle of soda, a milk carton, or a bucket of water.
When to use Milliliters (mL):
For things like a spoon of medicine, a small cup of juice, or eyedrops.
Activity 1: Volume or Capacity?
Read the sentence. Is it talking about **Volume** or **Capacity**?
Activity 2: Choose the Right Unit!
Which unit would you use to measure this? Liters (L) or Milliliters (mL)?