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