Math Lesson 04.08.24

3rd Grade Mathematics

April 8, 2024

Teacher Facing

3rd Grade Mathematics

April 8, 2024

LO: SWBAT represent and solve one and two-step

problems involving multiplication and division within 100.

DOL: SW represent and solve one and two-step problems
involving multiplication and division within 100 correctly on

4 out of 5 questions.

TEKS 3.4(K) solve one‐step and two‐step problems involving multiplication and division within 100 using strategies based on objects; pictorial
models, including arrays, area models, and equal groups; properties of operations; or recall of facts ®

TEKS 3.5(B) represent and solve one‐ and two‐step multiplication and division problems within 100 using arrays, strip diagrams, and equations ®

8

Do Now

Jerry and his son each have a granola bar. The two granola bars are
the same size.

●Jerry eats 3/6 of his granola bar.

●His son eats 3/8 of his own granola bar.

Which two fraction models show how much of their granola bars
Jerry and his son have eaten?

10

Choose One

Choose at least one of the images below. What do you notice?

A.

B.

C.

D.

6

6

6

6

Image by Mostafa Elturkey from Pixabay

11

Lesson Vocabulary

Factor

Product

Array

Area Model

4 x 3 = 12

4 x 3 = 12

Equal Groups

Dividend

Divisor

Quotient

12 ÷ 4 = 3

12 ÷ 4 = 3

12 ÷ 4 = 3

GET Strategy for Multiplication & Division

G: number of Groups
E: number of items in Each group
T: Total number of items

Multiplication

Division

G x E =T

T ÷ G = E

E x G=T

T ÷E = G

Multiply by 6

Stella will place 99 magazines on a shelf. She will make 9
equal stacks.

Draw a strip diagram to determine the number of magazines
that will be in each stack.

Let's represent.

Stella will place 99 magazines on a shelf. She will make 9
equal stacks.

Which equation can be used to determine the number of
magazines that will be in each stack?

A.

99 - 9 = 90

B.

99 ÷ 9 = 11

C.

99 + 9 = 108

D.

99 x 9 = 891

Let's represent.

Stella will place 99 magazines on a shelf. She will make 9
equal stacks.

How many magazines will be in each stack?

Teacher Exemplar

Strip Diagram

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?

?

?

?

?

?

?

?

99

Equation

99 ÷ 9 = 11

Stella has 11 magazines in each stack.

Let's represent.

Asher has 3 new games.

●Each game as 3 packs of cards.

●Each pack has 10 cards.

Which model can be used to find the total number of cards Asher has for these
three games?

3

3

3

3

3

3

3

3

3

10

10

10

10

10

10

10

10

10

3

10

3

10

3

10

F.

G.

H.

J.

10

10

10

84 - 6 = 78
78 + 2 =

A group of people bought tickets for a Game Event.

●

The group spent $6 for each ticket.

●

Altogether the group spent $84 on tickets.

●

Each person in the group received 2 tickets.

Which set of equations can be used to find the number of people in
the group?

A.

B.

84 + 6 = 90
90 - 2 =

84 ÷ 6 = 14
14 x 2 =

C.

D.

84 ÷ 6 = 14
14 ÷ 2 =

Let's represent.

A group of people bought tickets for a Game Event.

●

The group spent $6 for each ticket.

●

Altogether the group spent $84 on tickets.

●

Each person in the group received 2 tickets.

How many people were in the group?

Record your answer in the space provided.

Let's solve.

Let's practice.

Mason has 14 oranges. He will cut each of these oranges into 6
slices. Which array can be used to find the number of orange
slices he will have?

F.

G.

H.

J.

Orange Slice Vectors by Vecteezy.com

Let's practice.

Aria used all the balloons in 10 packages to decorate for a party.

●

There were 8 balloons in each package.

●

Half of the balloons in each package were blue.

Which equation can be used to find the total number of blue
balloons Aria used?

A.

10 x 8 - 2 = 78

B.

10 - 8 + 2 = 4

C.

10 x 8 ÷ 2 = 40

D.

10 x 8 ÷ 4 = 20

Let's practice.

Valentina had 56 flowers and 8 vases.

●

She threw away 8 flowers that had broken stems.

●

She put an equal number of all the flowers she had left into each
vase.

What is the greatest number of flowers Valentina put into each vase?

Record your answer in the space provided.

SW represent and solve one and two-step problems involving
multiplication and division within 100 correctly on 4 out of 5 questions.