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Sorting and counting

Putting things in groups and then counting each group.

Paper packet. Every task here also exists on screen, where it is checked automatically; answers written on paper are not assessed by Nydus. When you are back at a device, enter your answers there.

1. What you will learn

Today we use a sorting rule, count each group and sometimes check two attributes together.

2. Sorting words

3. Choose the rule first

Sorting puts objects together for a reason. A shape rule collects all circles, whatever their color. A color rule collects all red tiles, whatever their shape. Say the rule before moving anything. Then check every object once. An object that does not fit stays outside that group; it is not a mistake to leave it out.

Another way: picture

Sort these by shape, then imagine starting again by color.

4. Two checks together

A rule can require both color and shape: red circles. Check red, then check circle. A red square passes only one check. After sorting, count each group separately and record its amount. Pair objects from two groups to compare them. A group spread across more space need not have more objects.

5. Supply helper

Sort pretend craft supplies into useful groups. Tell a partner your rule, then ask them to test a new piece. Count again if the group changes.

6. All red tiles

1. 

   Check color only.

   First three tiles.

   They are all red.

2. Count this group.

   Three red tiles.

   The square belongs under a color rule.

7. Red and square

1. 

   Start with the red group.

   Three red tiles.

   All pass the first check.

2. Your turn: work this step out. Its working is at the end of the packet.

   Keep only squares.

8. Guided practice

 How many circles are in this collection? Count both colors.

Answer:

Audio transcript: None

9. Guided practice

A sorted tray holds ● ● ● ● and ■ ■. Which shape group has more?

• Circles
• Squares
• Same number

Audio transcript: None

10. Practice

Match each sorted group to its count: ▲ ▲; ● ● ● ● ●; ■.

Audio transcript: None

11. Practice

 Change the rule to SHAPE only. Count circles and squares, including every color.

Circles: _round. Squares: _square.

Audio transcript: None

12. Somewhere new

 A toy badge needs tiles that are BOTH red AND round. How many can be used?

Answer: red circles

Audio transcript: None

13. Somewhere new

A toy-window tray is for BLUE SQUARES. A new tile is blue and round. What should happen?

• Leave it out: it is not square
• Put it in: it is blue
• Put every tile in

Audio transcript: None

14. Lesson test

Lesson test: one question per skill, one attempt each, no hints. Your answers are checked when you submit.

15. Test question

 Record the blue squares and red squares separately.

Blue squares: _blue. Red squares: _red.

Audio transcript: None

16. What you can do now

Show why a blue circle does not belong in a group made only for blue squares.

Working for the steps left to you

7. Red and square, step 2