### Video Transcript

In this video, we’re going to learn
how to sort groups by how many objects there are. These are groups. We have a group of smiley face
stickers and a group of star stickers. The digit card number three tells
us how many objects there are in the groups. Each group has three stickers. These groups belong with the digit
card three.

Let’s have a look at an
example.

Mason is sorting pictures into
groups. Help him find pictures to go in
each group. What could go in this group?

This digit card tells us the amount
in the group. The digit is four. That means there must be four in
each group. Let’s check. Let’s count the carrots: one, two,
three, four. And there are one, two, three, four
children. The question is asking us what else
could go in this group. Let’s see if we can find any more
pictures that show a group of four.

Is this a group of four
flowers? No, it’s a group of five
flowers. So it doesn’t belong with this
group. How about this group of cars? How many are in this group? There are three cars in the
group. So the cars don’t belong in this
group either. This group has four bicycles, so it
does belong in the group. There are four carrots, four
children, and four bicycles.

Here’s another example. What could go in this group? This digit card tells us the amount
in the group. So we know that each group has
three things. So we have a group of three
apples. What else could go with this
group?

Let’s look at some more groups to
see. Does this group belong? There are five flowers, so it
doesn’t belong. Does this group of cars belong? It has three cars. Yes, it does belong.

What could go in this group? The digit card is number five. So our picture card must have five
things. We know there are five flowers in
this group. So this card belongs with this
group.

Now we’ve correctly sorted each
group according to how many objects it has. There are three cars, four
bicycles, and five flowers.