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Compare two groups of objects using matching or counting

Students will compare two groups of objects (up to 10) by matching objects one-to-one or by counting each group, then identify which group has more, less, or if they are equal.

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Compare two groups of objects using matching or counting

Kindergarten · Comparing Numbers and Quantities · question 1 of 3

0 of 12

12 rungs. A star at the top.

Fewer, or the same?

How it is taught

0:00 of 1:50

Fewer means the group with the smaller count.

Count each pile, not size or spread.

Read it: Line them up to compare

You have 9 apples on one tray and 6 on the other. Counting both piles from 1 is slow. Line them up — the extra apples stick out.

  1. Line the 9 apples in a row on the top tray.
  2. Line the 6 apples under them, one under each.
  3. Count the extras that stick out: 3. So 9 is more than 6.

Counting 9 then counting 6 from 1 works, but you can lose track of which pile was which.

When apples sit one under each, the extras stick out and you see which tray has more.

3 extras mean 9 is 3 more than 6, so 9 is more than 6.

Line the 2 trays up. The extras that stick out tell you which is more.

Saying 6 is more because those apples look bigger, without lining them up.

Line one apple under each. 3 apples stick out on the top tray, so 9 is more.

Which group has fewer: 6 cats or 2 cats? — 2 cats. 2 is fewer than 6.

5 apples vs 3 oranges

Let's compare two groups of fruit. Which group has more?

Here is a group of apples.

Let's count: one, two, three, four, five. Five apples!

Here is a group of oranges.

One, two, three. Three oranges.

Now let's match them — one apple to each orange.

Each orange gets one apple. Match, match, match.

Look — two apples have no orange to match with!

So the apples have more. Five is more than three.

The apple group has more. Great matching!

Which group has more?●●●●●apples5●●●oranges35 > 3MOREApples5 > 3
Kindergarten · Which group has more?

What you see

While they climb, your page writes one true line to ask about tonight, and a short note each Sunday.

MayaGrade 3 · Mathematics
Did you know?

A chessboard has 64 squares — share them out between the 8 rows and each row holds exactly 8.

Today’s goal
1 star — one skill mastered, every rung of its ladder climbed
Climbing now
Divide within 100

An example student.

MayaGrade 3 · Mathematics

Maya earned 2 stars this week — Interpret multiplication as equal groups, which took 6 answers over 3 days before its star landed 3 days ago and Multiply by 6, 7, 8 and 9. Next up: Divide within 100.

An example week.

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