MAFS3OA11 How many tires does each car have How many tires does each car have 4 4 4 4 Each car represents a GROUP of 4 tires 4 4 4 4 Since each group is EQUAL we can COUNT EQUAL ID: 469518
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Slide1
Count Equal Groups
MAFS.3.OA.1.1Slide2
How many tires does each car have?Slide3
How many tires does each car have?
4
4
4
4Slide4
Each car represents a GROUP of 4 tires.
4
4
4
4Slide5
Since each group is EQUAL, we
can
COUNT
EQUAL
GROUPS by skip counting.
4
4
4
4
We can skip count to find how many tires there are in all.Slide6
Let’s skip count by 4s to find how many tires in all.
4
4
4
4
4,
8,
12,
16
+4
+4
+4Slide7
4
4
4
4
4,
8,
12,
16
There are 16 tires in all.
Let’s skip count by 4s to find how many tires in all.Slide8
4
4
4
4
4,
8,
12,
16
So, 4 equal groups of 4 tires is 16 tires.
There are 16 tires in all.Slide9
How many arms does each student have?Slide10
How many arms does each student have?
2
2
2
2
2Slide11
Each student represents a GROUP of 2 arms.
2
2
2
2
2Slide12
Since each group is EQUAL, we can
COUNT EQUAL GROUPS by skip counting.
2
2
2
2
2
We can skip count to find how many arms there are in all.Slide13
Since each group is EQUAL, we can
COUNT EQUAL GROUPS by skip counting.
2
2
2
2
2
We can skip count to find how many arms there are in all.
2,
4,
6,
8,
10Slide14
Since each group is EQUAL, we can
COUNT EQUAL GROUPS by skip counting.
2
2
2
2
2
There are 10 arms in all.
2,
4,
6,
8,
10Slide15
So, 5 equal groups of 2 arms is 10 arms in all.
2
2
2
2
2
There are 10 arms in all.
2,
4,
6,
8,
10Slide16
How many crayons are in each pack?Slide17
How many crayons are in each pack?
3
3
3
4Slide18
How many crayons are in each pack?
3
3
3
4
Are these packs of crayons
EQUAL GROUPS?Slide19
How many crayons are in each pack?
3
3
3
4
Are these packs of crayons
EQUAL GROUPS?
NOSlide20
3
3
3
4
Are these packs of crayons
EQUAL GROUPS?
NO
Can we find out how many crayons there are in all?Slide21
3
3
3
4
Are these packs of crayons
EQUAL GROUPS?
NO
Can we find out how many crayons there are in all?
YESSlide22
3
3
3
4
Are these packs of crayons
EQUAL GROUPS?
NO
Can we find out how many crayons there are in all?
YES
But we won’t skip count because we don’t have EQUAL GROUPS.Slide23
3
3
3
4
Are these packs of crayons
EQUAL GROUPS?
NO
Can we find out how many crayons there are in all?
YES
But we won’t skip count because we don’t have EQUAL GROUPS.
+
+
+
=
13 crayons in allSlide24
Are there EQUAL GROUPS of bicycle wheels? Slide25
Are there EQUAL GROUPS of bicycle wheels?
YES
There are 8 equal groups of bicycle wheels.Slide26
Are there EQUAL GROUPS of bicycle wheels?
YES
So, we can skip count to find how many bicycle wheels there are in all.
There are 8 equal groups of bicycle wheels.Slide27
Are there EQUAL GROUPS of bicycle wheels?
YES
There are 16 bicycle wheels in all.
2
4
6
8
10
12
14
16
There are 8 equal groups of bicycle wheels.Slide28
So, 8 equal groups of 2 bicycle wheels is 16 bicycle wheels in all.
There are 16 bicycle wheels in all.
2
4
6
8
10
12
14
16
There are 8 equal groups of bicycle wheels.Slide29
Take out 12 counters.Slide30
Put them into
EQUAL GROUPS of 2.Slide31
Put them into
EQUAL GROUPS of 2.
2 + 2 + 2 + 2 + 2 + 2 = 12
6 twos is 12
6 groups of 2 is 12Slide32
Take out 12 counters.Slide33
Put them into
EQUAL GROUPS of 4.Slide34
Put them into
EQUAL GROUPS of 4.
4 + 4 + 4 = 12
3 fours is 12
3 groups of 4 is 12Slide35
Wrap-Up
How can you count equal groups efficiently?
How can you find out how many 4 groups of 3 is?Slide36
Bonus Questions
Renee has 4 packages of Twinkies. There are 2 Twinkies in each package. How many Twinkies does she have altogether?
This is 1 package of Twinkies.
Are there EQUAL GROUPS of Twinkies?
How can I find out how many Twinkies are there?
2, 4, 6, 8. There are 8 Twinkies in all.
OR
2+2+2+2=8. There are 8 Twinkies in allSlide37
Bonus Questions
2. What is 5 groups of 3?
3, 6, 9, 12, 15.
5 groups of 3 is 15.
5 threes is 15.