Lesson 105: Collecting and sorting objects

🧮 MATH (40 Lessons) • 🟣 D. Data and Money

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Objective

I can collect objects and sort them into groups by looking at their color, size, and shape. I can use words like big, small, round, color, shape, and size, and I can talk about how my groups are different.

Materials

Mini-lesson — Sorting objects into groups

When we sort objects, we put things that are alike together. Sorting helps us see patterns, differences, and how many we have in each group.

Sorting by Color

  • We look at the color of each object.
  • We put red things with red things and blue things with blue things.
  • Sorting by color helps us notice how many of each color we collected.

Sorting by Size

  • We look at how big or small objects are.
  • Big items go in one group, and small items go in another.
  • We can see which size group has more things.

Sorting by Shape

  • We look for shapes like round, square, or triangle.
  • Objects with the same shape go together.
  • Sorting by shape helps us compare how different objects look.

When we sort objects, we show what makes them similar and what makes them different.

Picture strip: Sorting by color, size, and shape.

Sorting by Color

Sorting by Size

Sorting by Shape

Guided Practice — Collect and sort real objects

You will collect a few small classroom objects and sort them into groups. Look carefully at how they look and decide how to sort them.

  1. Collect: Choose 6–10 small items (like crayons, buttons, paper clips, or blocks).
  2. Sort by color: Put objects with the same color together.
  3. Sort by size: Make a group of big items and a group of small items.
  4. Sort by shape: Make groups for round shapes, square shapes, or other shapes you see.
  5. Label groups: Write a short label for one group (for example, red, big, or round).
  6. Trace and draw: Choose one word and trace it on the tracing pad. Add a tiny picture to match the group.
Tracing Pad
Tracing snapshot for print
Tip: After you trace a word, draw a tiny item that matches your group (for example, a red crayon or a round button).

Practice 1 — Sorting by Color

[PLACEHOLDER PRACTICE 1]

Practice 2 — Sorting by Size

[PLACEHOLDER PRACTICE 2]

Practice 3 — Sorting by Shape

[PLACEHOLDER PRACTICE 3]

Quick Check — Sorting objects

Answer each question about sorting by color, size, and shape. You may look back at the mini-lesson.

1) What does it mean to sort objects?

Sorting means grouping objects that are similar.

2) Which word helps us sort objects by size?

Big and small describe size.

3) Which group could be sorted by color?

Colors like red, blue, and green.

4) Which group could be sorted by shape?

Circles, squares, and triangles show shape.

5) Which item is round?

Buttons are round.

6) Which group is sorted by size?

Big and small describe size.

7) Which word can help you sort by color?

Red is a color.

8) Which could be sorted by shape?

Round and square describe shapes.

9) Which group could be sorted by color?

Different colors show a color group.

10) Which word can help you sort by size?

Big and small show size.

11) Which shape is a circle?

The circle is round.

12) If you sort markers by color, which is the best label?

Blue is a color label.

13) If you sort crayons by size, which is the best label?

Small describes size.

14) Which sorting shows shape?

Circles and squares are shapes.

15) Why do we sort objects?

Sorting helps us compare groups.

Assessment (parent/teacher)

Exit ticket (student)

Next time I will practise…

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