Lesson 6 Estimate and Measure Weight

    • Let’s measure and estimate weight.

Warm-up Notice and Wonder: Produce Stand

What do you notice? What do you wonder?

A woman working at a fruit and vegetable stand.

Activity 1 Estimate Weight

Problem 1

This paper clip weighs about 1 gram.

Paper clip.

This basket of apples weighs about 1 kilogram.

Basket of apples.

For each weight measurement, find an example of something you think has about the same weight.

  1. 1 gram

  2. 10 grams

  3. 100 grams

  4. 1 kilogram

  5. 2 kilograms

Problem 2

Find some objects in the room that belong in each column based on their weight.

less than 1 gram

between 1 gram
and 100 grams

between 100 grams
and 1 kilogram

more than 1 kilogram

Activity 2 The Weight of Pets

Match each pet to the amount that could be its weight. Explain your reasoning.

pet

  1. guinea pig

    A guinea pig.

  2. dog

    A dog.

  3. small fish

    A pet fish.

  4. cat

    A tabby cat.

weight

  1. 20 kilograms

  2. 1 kilogram

  3. 3 kilograms

  4. 3 grams

Practice Problem

Problem 1

  1. Circle the items that might weigh about 1 gram.

    1. a piece of gum

    2. a turtle

    3. a dollar bill

    4. a chair

    5. a pen

  2. Circle the items that might weigh about 1 kilogram.

    1. a giant tortoise

    2. a pencil

    3. a pineapple

    4. a large book

    5. a full lunchbox