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Title of Project:
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Let's Bag It!
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Team Members: |
Leanne Yurkanin, Katie Holzman, Larry Porterfield, Scott Fisher |
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Grade Level
and/or Course: |
Grade 5 |
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Concept(s) used: |
Measurement, Prediction,
Fractions, Decimals, Estimation, Problem-solving |
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PA Standard(s) Addressed: |
- 2.2.5B
Develop and apply
algorithms to solve word problems that involve addition, subtraction
and/or multiplication with decimals with and without regrouping.
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2.2.5C
Develop and apply
algorithms to solve word problems that involve addition, subtraction
and/or multiplication with fractions and mixed numbers that include
like and unlike denominators.
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2.2.5G
Apply estimation
strategies to a variety of problems include time and money.
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2.3.5E
Add and subtract
measurements.
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2.5.5A
Develop a plan to analyze a problem,
identify the information needed to solve the problem, carry out the
plan, check whether an answer makes sense and explain how the
problem was solved.
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NCTM Standard(s) Addressed: |
- Compute fluently and make reasonable estimates.
- Understand measurable attributes of objects and the units,
systems, and processes of measurement.
- Apply appropriate techniques, tools and formulas to determine
measurements.
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Objectives / applications: |
Students will create a bag
containing three types of candy that meets the weight and cost criteria
determined by the instructor. |
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Problem: |
Using the data provided,
create a bag of candy that weighs 5 lbs. and costs between $7.00 and
$8.00. You must have some of each type of candy in your bag. Explain
your choices. |
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Model: |
Before beginning the
activity, you may want to pose questions that use weight and cost
criteria. For instance, “If I have $2.00 and candy costs $0.50 per
pound, how many pound of candy can I buy?” “If I have $2.00 and candy
costs $0.50 per ½ pound, how many pounds of candy can I buy?” and “I
have $2.00 and candy costs $0.50 per ¼ pound, how many pounds of candy
can I buy?” |
Resources and
Materials
(estimated cost):
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- Three types of candy
- Bags
- Calculators
- Paper
- Pencils
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Procedures &
Activities
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Procedure: |
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Answers/Rubric: |
| 5 - |
Student met weight criteria and purchased all types of candy within
cost range. Student included an explanation with advanced
understanding. |
| 4 - |
Student met weight criteria and purchased all types of candy or fell
within cost range. Student included and explanation with
satisfactory understanding. |
| 3 - |
Student met weight criteria but did not purchase all types of candy
and did not fall within the cost range. Student included an
explanation with almost satisfactory understanding. |
| 2 - |
Student did not meet weight criteria but did either purchase all
types of candy or fell within the cost range. Student included an
explanation with partial understanding. |
| 1 - |
Student made an attempt to solve the problem. Student included an
explanation with minimal understanding. |
| 0 - |
Student made no attempt to solve the problem. |
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Accommodations
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ESL: |
Depending on your
population, you may choose to set up this problem using metrics. |
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Special Ed: |
To accommodate these
students, you may drop the cost criteria and work with only the weights.
You may also decide to work with the cost and eliminate the weight
requirement. |
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Enrichment: |
To extend this project, you
could set up the problem in ounces and have the students convert the
measurements to pounds. You could also add another type of candy to the
mix. Finally, you could have the students actually weigh samples of the
candy using a balance scale and work with the exact weights and costs.
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Teacher
Procedure for “Let’s Bag It!”
- Students must have
previous experience with guess and check problem solving,
fractions and decimals.
- To introduce the
lesson, begin with questions that lead children to the
relationship between weight and cost when buying candy in bulk.
- Model some possible
purchases using one candy with many weights per cost criteria.
- Display candy and
explain the problem.
- Reveal the pricing
by weight for each candy selection.
- Hand out student
worksheet and point out the pricing that is listed on the top of
the page.
- Allow students to
begin working on the problem. Monitor their discussions. Answer
any questions they may have.
- After a reasonable
amount of work time, bring the group back together as a class and
allow them to present their solutions in front of the class.
Address any problems of errors during these presentations.
- Collect the
worksheets and grade according to the rubric.
Note: You may want to construct a presentation area using a
tri-fold backboard. You will need a large gift bag, plastic bowls,
a glue gun, markers and candy. Cover the backboard with colorful
paper. Cut the front out of the bag and hot glue the bag onto the
backboard. Cut three bowls in half and hot glue three of the
halves to the inside the bag that is on the backboard. Glue the
bowls in a diagonal pattern. Label the backboard with the name of
the problem and the weight and price data for each candy. The
student may present their solution by placing the three candy
choices, the total weight and total cost in the three bowls.
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Let’s Bag It!
Worksheet
Name(s):
CANDY A
¾ lbs.@$1.00 |
CANDY B
½ lbs.@$0.75 |
CANDY C
¼lbs.@$0.50 |
Using the data provided, create a bag of candy that weighs 5 lbs.
and costs between $7.00 and $8.00. You must have some of each type
of candy in your bag. Explain your choices.
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