teaching for understanding division with fractions
Post on 01-Jan-2016
59 Views
Preview:
DESCRIPTION
TRANSCRIPT
Teaching for UnderstandingDivision with Fractions
Dr. DeAnn Huinker, Dr. Kevin McLeod, Dr. Henry Kepner University of Wisconsin-Milwaukee
Math Teacher Leader (MTL) SeminarMilwaukee Public Schools
June 2005
Session Goals
Deepen conceptual understanding of division with fractions.
Examine “why” we can invert and multiply.
Summarize
Write the equation for each situation (8 cups; 5 cups).
Identify the meaning of each number in the equations.
SummarizeHow many 2–cup servings?
8 ÷ 2 = 4 cups cup servings
serving
5 ÷ 2 = 2 cups cup
serving
12
servings
SummarizeHow many 2–cup servings?
1 ÷ = 2 cup servings
4 ÷ = 8 cups servings
12
cupservin
g12
cupservin
g
TaskPopcorn Parties #1 & #2
Facilitator poses one problem at a time.
Each individual silently solves it.
On facilitator’s cue: State answer.
Demonstrator models with paper strips.
Take turns to justify your reasoning.
Popcorn Party #1
Serving Size: cup of popcorn
How many servings can be made from: 1 cup of popcorn 2 cups of popcorn 3 1/2 cups of popcorn
14
Popcorn Party #2
Serving Size: cup of popcorn
How many servings can be made from: 3/4 cup of popcorn 6 cups of popcorn 2 1/4 cups of popcorn 4 1/2 cups of popcorn
34
top related