# 1.3: Teeter Tottering

Difficulty Level: At Grade Created by: CK-12

Can you tell which animal is heavier in the picture below? Can you tell which animal is lighter? In this Concept, we will practice describing what we see and identifying what is heavier and what is lighter.

### Guidance

When looking at a picture of a teeter totter like the picture above, we will often see that one side is on the ground and one side is not. This tells us which object on the teeter totter is heavier and which object is lighter. The side of the teeter totter that is on the ground will have the heavier object on it. The side of the teeter totter that is not on the ground will have the lighter object on it.

#### Example A

Look at the picture below and describe what you see:

You should notice two animals on a teeter totter. One rabbit and one kitty. The kitty's name is Katey. The rabbit's name is Robbie.

Who is heavier?

You should notice that Robbie is heavier.

How can you tell from the picture?

You can tell because the rabbit’s side is lower because he weighs more.

#### Example B

Look at the picture below and describe what you see:

You should notice two animals on a teeter totter. One is a squirrel and one is a rabbit. The squirrel is named Sam. The rabbit is named Robbie.

These two animals weigh the same. How can you tell from the picture?

You can tell because the teeter totter is level. Neither of the sides are lower than the other.

#### Concept Problem Revisited

In this picture we see a teeter totter with Geoffrey the giraffe and Lester the lion. We can see that Geoffrey is heavier. The giraffe's side is lower because he weighs more. We can see that Lester is lighter. The lion's side is higher because he weighs less.

### Vocabulary

One object is heavier than another object if it weighs more. One object is lighter than another object if it weighs less. We can compare the weights of objects by looking at them on a teeter totter.

### Guided Practice

For each teeter totter below, describe what you see. Then, identify which animal is heavier, which animal is lighter, or if the two animals weigh the same amount. Explain how you can tell from the picture.

1.

2.

3.

1. You should see 2 animals on a teeter totter: an otter and a camel. The otter is named Orly and the camel is named Cassie. Cassie is heavier because the camel is at the bottom of the teeter totter. Orly is lighter because the otter is at the top of the teeter totter.

2. You should see 2 animals on a teeter totter: a baby elephant and a donkey. The elephant is named Ellie and the donkey is named Derrick. Ellie and Derrick weigh the same. We can tell because the teeter totter is level.

3. You should see 2 animals on a teeter totter: a hippopotamus and an aardvark. The hippopotamus is named Harry and the aardvark is named Andrea. Andrea is lighter. We can tell because the aardvark is at the top of the teeter totter. Harry is heavier. We can tell because the hippopotamus is at the bottom of the teeter totter.

### Practice

For each teeter totter below, describe what you see. Then, identify which animal is heavier, which animal is lighter, or if the two animals weigh the same amount. Explain how you can tell from the picture.

1. Draw your own picture of a teeter totter that shows two animals weighing the same amount.
2. Draw your own picture of a teeter totter that shows one animal weighing more than another animal. Circle the animal that is heavier.

### Notes/Highlights Having trouble? Report an issue.

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Date Created:
Jan 18, 2013