Section B: Practice Problems Count and Compare Groups of Images

Section Summary

Details

In this section, we counted many different groups of things. We kept track of which ones we counted to make sure that we only counted each thing one time.

We also compared the number of things in groups using “greater than”, “less than”, and “equal to the number.”

Sometimes we could just see which group had a greater number of items.

Straws, 6. Cups, 9.

There are a greater number of cups than straws.

Sometimes we had to match or count to figure out which group had less.

5 frame, filled. Below, 2 counters.
Group of 6 red counters.

6 dots is less than 7 dots.

Problem 1 (Lesson 9)

How many dots are there?

  1. Dots, 2 group of 3.
  2. Dot image.

Problem 2 (Lesson 10)

Are there more apples or plates?

Apples, 6. Plates, 5.

Problem 3 (Lesson 11)

  1. Circle the 5-frame that has more dots.

    1. 5 frame, 4 counters.
    2. 5 frame, filled. Below, 1 counter.

  2. Circle the group that shows less things.

    1. Fingers showing numbers. 5 and 1.
    2. 5 frame full. 3 counters below.

Problem 4 (Lesson 12)

  1. Circle the 3 groups that show a greater amount than this 5-frame.

    5 frame, full.
    1. Fingers showing numbers 5 and 2
    2. Dots, 5.
    3. Dots, 6.
    4. Five frame, 4 counters.
    5. 2 groups of 4 dots.

  2. Circle the 3 groups that show an amount less than this 5-frame.

    5 frame, 4 counters.
    1. Fingers showing number 3
    2. 5 frame, filled, 2 counters below.
    3. Dots. 2 groups of 3.
    4. Dots, 2.
    5. 5 frame, 3 counters.

Problem 5 (Lesson 13)

Here is a drawing.

Circles, 6.

  1. Draw a picture with a greater amount of things.

  2. Draw a picture with less things.

Problem 6 (Exploration)

Make a set of cards with images. Some cards can have an equal number of images and some cards can have different numbers of images.

Trade your cards with a partner.

Turn over two cards and decide if they have an equal number or if one has less and one has greater.

Problem 7 (Exploration)

Are there less students than chairs? Explain how you know.​​​​​

Classroom. 12 Students in chairs. 1 empty chair.