dig into intervention: fraction addition
TRANSCRIPT
DIG INTO INTERVENTION:
FRACTION ADDITION
Presented by MathLinks Author
Mark Goldstein
For more information about our core programs for middle school and
intervention programs for grades 6-9, please visit:
www.mathandteaching.org
In this session, you will learn:
Some models for illustrating fraction
addition
Some strategies for adding fractions
2
Philosophy
Reviews elementary topics from a more
mature perspective
Develops concepts using sense making
strategies
Uses horizontal recording techniques that
help prepare students for algebra
Many learners struggle with fractions in middle
school and beyond. Our intervention work:
3
Assumptions
Students understand fraction meaning and equivalence.
4
Assumptions
Students can rename fractions using “the big 1.”
1
3·3
3=3
9
Diagram 1 Diagram 2
1 whole 1 whole
3
9
1
3
5
Strategies/Approaches
Use a diagram
Use mental math
Use paper and pencil calculations
6
Add:
1 3 4
5 5 5
1 3
5 5
0
5
1
5
2
5
3
5
4
5
5
5
7
Interpreting “mixed” numbers
2 21 1
5 5
0 1 2
8
Add: 1 1 26 2 4
3 4 3
12 11
4
113
4
1 1 2 6 2 4
3 4 3
9
You have two and three-fourths waffles. Your
friend has one and one-eighth waffles. How many
waffles do you have together?
3 12 1
4 8
3
6 13
8 8
7 73 3
8 8
3 12 1
4 8
1
8
3 2
4 2
10
You have two and three-fourths waffles. Your
friend has one and one-eighth waffles. How many
waffles do you have together?
3 12 1
4 8
11 9
4 8
11 2
4 2
22 9
8 8
31 7 3
8 8
9 8
11
Sequence summary - adding only
2 12
3 2.
35 1
8.
36 3
8.
1 18 3 2
3 2.
12
1 31
5 5.
2 23 1 1
5 5.
1 1 24 6 2 4
3 4 3.
3 17 2 1
4 8.
OUR PROGRAMS:
Comprehensive 6-8 curriculum
Customized intervention grades 6-9
Special Education programs
Supplemental programs
For more information, please visit our website at
www.mathandteaching.org
13
THANK YOU!
Shelley Kriegler
Mark Goldstein
To download handouts or view webinars go to
www.mathandteaching.org/webinars