bim understanding fractions

7/30/2019 BIM Understanding Fractions

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UnderstandingFractions

ELD 375

Sarah Jacobs

Kelly Collova

Alicia Govannicci


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Focus Problem

Grandma Sally loves baking breakfast muffins.She just recently found a new recipe for

blue berry muffins. Grandma Sally is so

excited to bake the muffins for her

grandchildren! She took out all the

ingredients but realized she was missing

some of the measuring cups. She only has 1/3,

1/8, and 2/5 measuring cups.

Grandma Sally realizes this is a huge

problem because she needs:

o 2/3 cups of flour.o 1/2 cup of granulated sugaro 1 1/3 cups of blue berries

What measuring cups does Grandma Sally have

to use in order to get the exact

measurements she needs to make the recipe?


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What is the least number of scopes that she

can use in order to get cup of sugar?

Show your work and explain your process. Be

prepared to justify your answer. You may use

any manipulatives or drawings to help you.

Make sure to have your explanation in

written form as well:

Explain the reason why you decided to usethe method that you did:

Knowing all you have learned previously

about fractions, are there other methods

you could have used to figure out the


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problem? Describe your answer and show an

example of the other method(s).

Materials Needed For BIM

Materials:

Muffin problemSandwich worksheetPencilEraserDot paperPattern BlocksPencil


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Scrap paper

Understanding

Fractions


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Early Elementary School Activity

Grades K-1


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Lucys favorite meal of the day is lunch.

She takes the same sandwich to lunch

everyday. Her mother likes to cut hersandwich into two equal pieces.

How many ways can Lucys mother cut her

sandwich into equal pieces? Or is there only

one way for her mother to cut her sandwich

into equal pieces? Explain your answers.

Materials:

Sandwich square worksheet Pencil Eraser Dot paper

Using the dot paper, draw each equal cut

that Lucys mother can make in the sandwich.

How many different ways can Lucys mother

cut the sandwich?


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Does each way represent equal pieces?

The next day Lucy was wondering if she can

cut her sandwich into four equal piecescalled quarters. Can a square be broken up

into four equal pieces? If so how many ways

can she share her sandwich with four friends,

so they have equal pieces?


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Draw the lines on the squares below to

represent the different ways Lucy can make

four equal pieces.


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Understanding

Fractions

Middle Elementary School Activity

Grades 2-3


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Harry had some friends over for a day full

of sled riding and snowball fighting! At

different times throughout the day, his

friends had to take a break and go inside to

warm up. Harrys mom had cocoa mix and warm

water to make hot chocolate with so that

they can warm up. For each cup of hot

chocolate, the kids needed to add 1 cup of

warm water to the cocoa mix, but they gottired of waiting their turn to use the 1 cup

measuring cup. Instead, some kids decided

to use these measuring cups: 1/2, 1/4, 1/3,

and 1/8. Using any combination of those

measuring cups, how many different ways can

you find to make 1 cup?


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How did you organize your ideas to make sure

that you thought of all the combinations?

Did you seem to use one measuring cup most

often? Why?

What other measuring cups would be useful?


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What if you needed 2 cups of warm water?Now, how many different kinds of

measurements can you use?

Understanding

Fractions


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Upper Elementary School Activity

Grades 4-5

Julie built the following picture of a

flower using pattern blocks. She made the

flower for her schools pattern building

competition. The winner of the competition

will get to go on a math class field trip.


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Materials:

Pattern Blocks Pencil


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How many green blocks can you fit into the

yellow block?

How many green blocks can you fit into the

red block?

How many green blocks would Julie need if

she wanted the make the whole flower out of

green?

What fraction part of the flower are made

out of green blocks?

If Julie were to make the flower out of all

blue blocks how many would she need?


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bim understanding fractions

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