Fractions!!

What is a fraction? A way to show the parts

of something whole

We use fractions a lot in every day life!

These are fractions…

23

911

49

215

34

Let’s choose one…

14

These are fractions too…

Fruit Sold

ApplesOrangesBananasMangoes

Usually, we use numbers to represent

fractions!

Fractions…

Have 2 parts:

1

4

Numerator

DenominatorThis is the fraction bar. It means division, or 1 DIVIDED BY 4

Pop Quiz!!

1

4

What is this called?

What is this called?

If you can remember North

Dakota, then you can

remember:

North-Numerator

Dakota-Denominator

Now…what do those words mean??

14

Numerator - The number of parts

Denominator - All of the parts of the whole

ONEout of FOUR

There HAS to be a better way to

learn about fractions!!

How about…

CHOCOLATE MATH!!!

Remember the Rules…

You will get to eat your chocolate bar AFTER we are finished…

Please…NO NIBBLING!!

Please don’t touch someone else’s bar without permission

Please keep your bar on your paper or wrapper

First…before unwrapping…

How many bars total do we have in the classroom?

How many belong to girls?How many belong to boys?

How many belong to someone age 12?How many belong to someone age 11?

How many belong to someone over age 12?How many belong to monkeys?

How many are made of chocolate?

10Would this be the

numerator or denominator?

Next…

You will get a number…1 or 2

Ones…unwrap your bar please!!

What fraction would we write to describe how many bars are unwrapped right now?

10=

152

On your paper, please make these fractions

with your bar:2

1216

412

13

312

14

612

12

=

=

=

=34

912

23

812 =

=

56

1012=

Now try these…

112

712

512

1112

=

=

=

=1212

012 =

=

Keeping your hands on your own bar…

Create any fraction with your chocolate.

Next, combine your fraction with someone else (make sure you keep your chocolate on your paper, separate from your partner’s)

How can we combine them without losing track of what we have?

For example…

312

612+ = 3

49 12 =

This is the reduced fraction, or LOWEST TERMS

BUT…

14

13+ =

We need a COMMON

DENOMINATOR!!!

What if this happens…

??

Rewrite the fraction with the same denominators…

14

13+ =

Is the same as Is the same as

412

312 + = 7

12

712

Your Assignment!!!

Complete the Hershey’s Math table.

Please BE NEAT!!!