Transcript Introduction to Fractions - Academic Success for All

Introduction to Fractions
Have you ever wondered about fractions?
What is a fraction?
When do we use fractions?
How do we add, subtract, multiply, and divide
fractions?
In this program you will learn the answers to
these questions and more.
When you look around you can see fractions
used in many ways.
Fractions can be used in many ways.
 Someone might say the time
on this clock is half past 2.
 Or it might take you half of an
hour to do your homework.
 If you have 3 friends over for
pizza, you will each get one
fourth of the pizza.
 Your teacher might divide the
class into 6 groups for an
activity. One sixth of the class
would be in each group.
Understanding Fractions will help you to follow recipes
when you are cooking or baking.
If you are building something, you may need to
use fractions to help you cut the pieces into the
right lengths.
Understanding fractions will help you in many
ways so let’s begin.
First, we’ll look at how fractions are written.
The bottom number of a fraction tells how many parts are
in each whole group.
The bottom number of this fraction is 4. The 4 tells us
how many parts to make in each whole group.
4
The top number tells how many parts we use, so we
shade in 3 parts.
3
Your Turn.
 In a fraction what does the bottom number tell?
 That’s right, it tells how many parts to make in each
whole group.
 What does the top number tell?
 Yes, it tells how many parts we use, or how many parts
to shade in.
Look at this fraction
5
3
 What is the bottom number?
 Yes, 3.
 How many groups should we
make in each circle?
 3.
 What is the top number?
 5.
 How many parts should we
shade?
 5.
Let’s look at another fraction.
5
6
 How many parts should we make in each circle?
 Yes, 6.
 How many parts should we shade in?
 That’s right, 5.
 Remember, the bottom number of a fraction tells us how
many parts to make in each whole, and the top number
tells us how many parts we use or shade in.
Your turn.
 Find problem 1 of part A on your worksheet. What is the first fraction?
 Yes, 5
2
 Divide each circle into the right number of parts.
 This is what you should have.
 Now shade the number of parts you use.
 This is what you should have. Check your work.
Now look at problem 2 on your worksheet.
7
4
 Divide each circle in to the right number of parts.
 This is what you should have.
 Now shade the number of parts you use.
This is what you should have. Check your work.
You have successfully completed part 1 of the fractions package.
Good Job!!
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