operating on fractions with a visual model: no algorithms required!
DESCRIPTION
RSS Mini Conference 2013-2014 Candyce Tracy. Operating on Fractions with a Visual Model: No Algorithms Required!. Outcomes. Learn something NEW…….. preferably about fractions. Leave curious about what the new standards expect in terms of fractions instruction. Missing Understanding. - PowerPoint PPT PresentationTRANSCRIPT
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Operating on Fractions with a Visual Model: No Algorithms Required!
RSS Mini Conference
2013-2014
Candyce Tracy
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Outcomes
• Learn something NEW…….. preferably about fractions.
• Leave curious about what the new standards expect in terms of fractions instruction.
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Missing Understanding
• Unitizing• Partitioning and Iterating
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Unitizing Is the ability to identity subgroups
within groups – for fractions- unitizing helps to see fractional parts and equivalent fraction
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Partitioning
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Iterating
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Equivalence
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Adding Fractions I wonder what fraction combinations you can use to equal 1 whole?2/3?
Record your equations
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Adding Fractions
½ + ⅓ =
⅙ + ⅔ =
⅚ + ½ =
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Adding Fractions
½ + ¼ =
¼ + ⅜ =
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5/6 + 5/12 =
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Subtracting Fractions
Roll your dice and model using clock
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Solve: ½ + ¼ =
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Solve: ¼ + ⅗ =
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Mitch owns ¾ of a section
of farmland, and he’s going to plant potatoes on
½ of the land. What fraction of a section will be planted with Mitch’s
potatoes?
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Alicia owns ¾ of a section
of land. She plants pumpkins on 2/3 or her
land. What fraction of the entire section is planted
with pumpkins?
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Yumiko owns 5/6 of a section of land. She plants
peanuts on 2/3 of her land? What fraction of the entire section is planted with Yumiko’s peanuts?
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Talisha is making cakes for Field Day. She has 6 cups of flour, and needs 2 cups to make 1 cake. How many
cakes can she make?
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Division situations can often be categorized as on of two types of problems
• Sharing• Grouping
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Alex’s dad made a pan of brownies and there was 1/3 of the brownies left. After school, Alex and his friend equally shared what was left. What fraction of the
whole pan of brownies did each person eat?
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2 ⅓ ÷ ⅚ =
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Reflection of Session
Please use an index card1) Something I learned
2) A Question I still have3) How can I better
facilitate your learning?