LO: SWBAT determine if two given fractions are equivalent

using a variety of methods. 4.3C

DOL: SW determine if two given fractions are equivalent

using a variety of methods correctly on 4 out of 5 questions.

TEKS 4.3(C) represent equivalent fractions with denominators of 2, 3, 4, 6, and 8 using a variety of objects and pictorial models, including number
lines. (S)

What fraction of this model is represented?

What fraction is equivalent to the shaded model?
Write the TWO answers on your dry erase boards.

11

Lesson Vocabulary

Equivalent Fractions

Fraction

Numerator

Denominator

2

4

2

4

2

4

1

2

2

4
=

are fractions that name the same part of a
whole region, set, or distance on a number
line.

Draw Models

Multiply

1
2

2
2

1

2

2

4

Partition the area evenly.

Multiply the fraction by a
fraction that is equivalent
to one.

x

x

2
4

=
÷

÷

2
2

1
2

=

Divide

2
4

Divide the fraction by a
fraction that is equivalent
to one.

What fractions are equivalent to 1 ? Use your whiteboard.

2

1
2

1
3

1
4

1
5

1
6

1
8

1
10
1
12

1 whole

What fractions are equivalent to 1 ?

4

1
2

1
3

1
4

1
5

1
6

1
8

1
10
1
12

1 whole

What fractions are equivalent to 3 ?

4

1
2

1
3

1
4

1
5

1
6

1
8

1
10
1
12

1 whole

Just remember -

Whatever you do to the top, you have to do the same to the bottom.

1/3 = 3/9

• We did 1x3 = 3 to get the numerator.

• We did 3x3 = 9 to get the denominator.

• So, 1/3 = 3/9

• Let's try a few more...

So the factors for 18 and 36 were....

18: 1, 2, 3, 6, 9, 18

36: 1, 2, 3, 4, 6, 9, 12, 18, 36

SW determine if two given fractions are equivalent using a variety of

methods correctly on 4 out of 5 questions.