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The same number

Two groups that match one for one.

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 find out if two groups have the same number. We match them up, one to one, and see if any are left over.

2. Words to hear

3. A partner for each one

Same number means equal amounts. Put one cup beside one plate. Keep making pairs. If every cup has one plate and every plate has one cup, the groups have the same number. Their colors and shapes need not match. If an object is left without a partner, the amounts are not equal.

4. Move without adding

Now slide the plates farther apart. The plate row looks longer, but no new plate arrived. Match again to check. Each cup still has one plate. Count the cups and the plates separately: both groups have three. A longer-looking row need not have more objects.

5. Picnic check

Let an adult set out toy guests. Give each one a pretend dish. Show your pairs before counting. An adult can read the task, but you choose how many dishes to bring.

6. Check the toy table

1. Match each cup to one plate.

   Three pairs.

   Each object is used once.

2. Look for leftovers.

   None on either side.

   No leftovers means equal groups.

7. Two bears need seats

1. [Two counters representing bears]

   Give the first bear a seat.

   One pair.

   One seat belongs to one bear.

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

   Seat the other bear and check.

8. Guided practice

Match each group of cups with the same number of spoons.

Audio transcript: None

9. Guided practice

This group is ● ● ●. Which group has the same number?

• ▲ ▲ ▲
• ■ ■
• ● ● ● ●

Audio transcript: None

10. Practice

Match these close groups to the same number spread out.

Audio transcript: None

11. Practice

Count both collections separately: ● ● ● ● ● and ■ ■ ■ ■ ■. Record each amount.

Circles: _a. Squares: _b.

Audio transcript: None

12. Somewhere new

Three toy rabbits sit in a triangle. Put out the same number of pretend carrots, in a line. How many carrots are needed?

Answer: carrots

Audio transcript: None

13. Lesson test

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

14. Test question

Four toy boats are spread out. Make a close group of flags with one for each boat. How many flags?

Answer: flags

Audio transcript: None

15. What you can do now

You can tell if two groups have the same number. How do you check without counting?

Working for the steps left to you

7. Two bears need seats, step 2