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302A pp Section 5.1 Fractions

# 302A pp Section 5.1 Fractions - Fractions I At your table...

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Fractions I At your table, make a list of all the reasons that fractions are hard for kids.

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Agenda Go over warm up. Exploration 5.8 and 5.9 Meanings for fractions: part-whole, ratio, operator, quotient Assign Homework
Explorations Exploration 5.8 Part 1: #1 - 5, 7 Pay extra attention to answering #3: “if [blank] = 1, then sketch a/b” Pay extra attention to answering #5: “if [blank] = a b/c, then sketch 1” Exploration 5.9 Part 1: #1, 2, 4 - 7 (skip 5c), Part 2 #1, 2; Part 3 # 1

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Meanings for fraction: 2/5 Part-whole: subdivide the whole into 5 equal parts, then consider 2 of the 5 parts. 0 1/5 2/5 3/5 4/5 1 discrete area Length (number line)
Show 3/8 and 8/3

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Show 3/8 and 8/3 0 1/2 1 3/2 2 5/2
Now you try… Show pictorial models for 1/10 and 5/3.

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Meanings for fraction: 2/5 Ratio: a comparison two quantities. In this case, the first quantity is the number of parts/pieces/things that have a certain quality, and the second quantity is the number of parts/pieces/things that do not share that quality. 2 purple : 3 non-purple 2 : 3
Show a picture and a word problem for 4/9 as a ratio. In a group of students, 8 are female and 18 are male. What is the ratio of female to male students?

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Meanings for fraction: 2/5 Operator: instead of counting, the operator can be
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