Fractions lesson 1
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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!