1. Review from Last Class
Answer the following questions on a piece of paper:
What is a numerator? What does it tell us?
What is a denominator? What does it tell us?
What is an equivalent fraction?

2. Numerator
The numerator tells us how many parts of the whole are being considered. 1 2
1 green part

3. Denominator
The denominator tells us the total number of equal parts in the whole object. 1 2
2 equal parts

4. Equivalent Fractions / Reducing
Equivalent fractions have the same value, even though they look different. Why? When you multiply/divide the numerator AND denominator by the same number, the fraction keeps its value.

5. Equivalent Fractions / Reducing

6. In-class Activities / Practice
Modelling Fractions & Fair Shares
Paper Pizza – pg 22, #4-6
Paper Rule - pg 23+24, #8-14
Modelling Fractions with Counters
pg 25+26, #’s 1,2,4,5
Modelling Fractions with Cube-a-Links
pg 30-32, #1-3

7. Math 801A: Mathematical Operations – Adding Fractions
Mathematics Essentials
March 5th, 2017

8. Lesson Introduction Today I will...
add fractions concretely, pictorially, and symbolically
add fractions in problem situations using the most appropriate method

9. Adding Fractions
Try the journaling activities on page 35 (example 1 and 2).
How are these similar? How are they different?

10. Adding Fractions with Like Denominators
These are the easiest types of fractions to add
Add the numerators together and keep the same denominator!

11. Adding Fractions with Unlike Denominators
Steps to take to solve problems with unlike denominators:
Draw a picture or use fraction strips
Find a “common denominator” - make the pictures have the same number of equal parts (same denominators)
Add the numerators and use the common denominator

12. Adding Fractions with Unlike Denominators
E.g
E.g
E.g. 3 6

13. Common Denominator – Butterfly Solution

14. Mixed Numbers vs. Improper Fractions

15. Adding Fractions Try the journaling activities on page 36 (example 3).
How is this similar to what we already know about adding fractions?

16. Homework!
In-class worksheets.
Page 36, #4-6.