1. Teaching Fractions by Jed Hendzel and Sandy Vanderloop
Where do you use and see fractions everyday?

2. Making Connections to Fractions
Fraction words
Whole – the entire part
Part – a piece or part of a whole unit
Fraction – one or more parts of a whole or unit
Halves - what fraction of the letters are green? 3/6 or 1/2
Thirds - what fraction of the letters are red? 2/6 or 1/3
The numerator tells you how many parts we are talking about, can this number ever be zero?
The denominator tells you how many parts the whole is divided into

3. Part-Whole The whole has been partitioned into equal parts
Region – region is a whole and parts are congruent
Length – any unit of length can be partitioned into fractional parts of equal length
Set – uses a set of objects as a whole
Area - parts must be equal in area but not necessarily congruent

4. Region Region is a whole and parts are congruent

5. Length Any unit of length can be partitioned into fractional parts of equal length
How many 1/12’s are in a whole?
How many 1/8’s are in a whole

6. Set Uses a set of objects as a whole
Which part of the set has single digits?
Which part of the set is striped?
9/15 or 3/5
Three-fifths
7/15
Seven-fifths
Which part of the set uses the number 1?
Which part of the set is black?
7/15
1/15
Seven-fifteenths
One -fifteenths

7. Area Parts must be equal in area but not necessarily congruent
If Jed ate 1 slice of the apple what fraction did he eat? What fraction of the apple is left? How would you write that?

8. Quotient
Partitioning – sharing equally
If we have 12 carrot sticks how would you share them equally with 4 friends?

9. Ratio
1 teacher
______
5 children
One-fifth

10. Equivalent Fractions 1/2 is equal to 5/10 1/3 is equal to 3/9

11. Comparing and Ordering Fractions
Are these fractions equal?
7/16 < 3/4
3/16 < 5/8

12. Mixed Fractions
1 1/2
1 2/8
wholes
and
parts

13. Improper Fractions http://spmath81708.blogspot.com

14. Adding and Subtracting Fractions with like denominators

15. Adding Fractions with unlike denominators

16. Subtracting Fractions with unlike denominators
To subtract the fractions, we need to make their denominators match.
visualfractions.com

17. Multiplying and Dividing Fractions
Multiply the numerators together and multiply the denominators together

18. Dividing Fractions