Fractions lesson 1

Post on 10-Jul-2015

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Transcript of Fractions lesson 1

FRACTIONS

WHAT IS A FRACTION?A fraction is a number that tells us parts of a whole.

This is a whole,one big circle!

These are parts!

WHAT IS A FRACTION?LOOK AT THIS PIZZA! IT’S A WHOLE PIZZA

This pizza has been cut into half! It’s now TWO parts. In fractions we call this “one half” we write this as

WHAT IS A FRACTION?LOOK AT THIS PIZZA!

This pizza has been cut into three equal parts. We call this one third and write it as

THE WHOLE PIZZA CUT INTO THREE EQUAL PARTS GIVES US THREE THIRDS. THINK ABOUT JUST ONE SLICE. WE CAN WRITE THIS USING A FRACTION

THINK ABOUT TWO SLICES. TWO SLICES IS TWO THIRDS. WE CAN WRITE TWO THIRDS AS

THE TOP NUMBER OF THE FRACTION TELLS US HOW MANY SLICES WE HAVE.WE CALL IT THE NUMERATOR.

The bottom number tells us how many parts in the whole pizza.We call it the denominator.

FRACTIONS OF A WHOLEWHAT IF YOU HAVE A CAKE CUT INTO SIX EQUAL PARTS?

Here are all the fractions you can make.

WITH YOUR PARTNER!

Turn to p.79Take turns reading out the fractions!

GO TO P.80!

Let’s read together!

FINISH P.81

Write NEATLY!