Video Transcript
Comparing Groups of Objects:
Equal
In this video, we will learn how to
compare groups of up to five objects to see if they’re equal. To do this, we’re going to use a
matching strategy.
Here, we have two groups of
socks. Are the groups equal? Equal groups have the same number
of objects. Does each group have the same
number of socks? To help us find out if the groups
are equal, we could try to match the socks. We could match these two socks
because they have the same pattern. And we could also match these two
socks. We matched all the socks in the
first group. But we have an odd sock in the
second group. There’s one more sock left
over. The second group has more
socks. These two groups of socks are not
equal. The second group has more
socks.
In this picture, we have a group of
leaves and a group of caterpillars. Are the two groups equal? We can match the first leaf to the
first caterpillar. And we can match the second leaf to
the second caterpillar. Each caterpillar has a leaf. The groups are equal.
Let’s practise comparing groups of
objects to see if they’re equal, using the matching strategy.
Are there the same number of paint
brushes as paint palettes?
Here, we have a group of paint
palettes and a group of paint brushes. We have to find out if the number
of paint palettes is equal to the number of paint brushes. We can match the first palette to a
paint brush. And we can match the second palette
to a paint brush. And the third palette also has a
brush. Each paint palette has a brush. So, we have the same number of
paint brushes as palettes. The number in each group is
equal. So, the answer to the question are
there the same number of paint brushes as paint palettes is yes. We were able to match each palette
to a brush.
Does the number of balls equal the
number of rackets?
The picture shows a group of tennis
rackets and a group of tennis balls. The question is asking if each
group is equal. In other words, are there the same
number of rackets as tennis balls? To help us answer this question, we
could try and match the balls to the rackets. The first racket has a ball. The second racket has a ball. So does the third racket, the
fourth racket. But there’s no racket for this
tennis ball. This means the number of balls and
rackets are not equal. We have more tennis balls than
rackets. So, the answer to the question does
the number of balls equal the number of rackets is no. There are more tennis balls than
tennis rackets.
Is there a blouse for each
skirt?
Let’s try matching the blouses to
the skirts. There’s a blouse for the first
skirt. We can match the second skirt to
this blouse. And we can match this skirt and
this blouse. But there’s no blouse for this
skirt. There isn’t a blouse for each skirt
because there are more skirts than blouses. We still have one skirt left
over. So, the answer to the question is
there a blouse for each skirt is no. There are more skirts than
blouses.
In this video, we have learned we
can compare two groups to see if they’re equal using matching.
