Expert answer:Percent predictions, assignment help
Answer & Explanation:see attachedprecentpredictionsrubric__1_.pdfpercentpredictions.pdf
precentpredictionsrubric__1_.pdf
percentpredictions.pdf
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Name
Date
Math Portfolio Rubric
UNIT NAME: APPLICATIONS OF PERCENTS
Portfolio Project: Percent Predictions
Criteria
(Weight)
Excellent (4)
Good (3)
Fair (2)
Poor (1)
Reasoning and
Communication
The student
provides a clear,
logical, and
precise
explanation of
his/her reasoning
and planning.
The student
provides an
adequate
explanation of
his/her reasoning
and planning.
The student
provides a partial
explanation of
his/her reasoning
and planning.
The student
provides a limited
explanation of
his/her reasoning
and planning.
The portfolio
project
demonstrates
excellent modeling
and/or use of tools.
The portfolio
project
demonstrates
adequate
modeling and/or
use of tools.
The portfolio
project
demonstrates
some modeling
and/or use of tools.
The portfolio
project
demonstrates little
or no modeling
and/or use of tools.
The portfolio
project
demonstrates a
fully developed
understanding of
percent of change.
The portfolio
project
demonstrates an
adequate
understanding of
percent of change.
The portfolio
project
demonstrates a
basic
understanding of
percent of change.
The portfolio
project
demonstrates an
inaccurate
understanding of
percent of change.
/8
Total points:
/16
(x1)
Modeling
and/or
Use of Tools
(x1)
Presentation
(x2)
Comments
© 2015 Connections Education LLC. All rights reserved.
Points
Awarded
/4
/4
Name
Date
Percent Predictions
UNIT NAME: APPLICATIONS OF PERCENTS
Directions: You probably see them in the news all the time—predictions about
prices, jobs, stocks, and other aspects of the economy. Now it’s your turn to predict
the future! Follow the directions to make and explain an economic prediction for an
article you have been asked to write in the Economic News.
1. Choose one item of interest to you in the Historical Pricing Chart on the next
page.
2. Calculate the percent of change of the item’s price each decade, and use
your results to determine the average rate of change from 1960–2000.
3. Comment on the trend in your item’s percent of increases.
4. Go shopping! Find the average current price of your item online, in the
newspaper, or locally by looking at the price when you go to the store in the
next day or two. Does the current price match the trend from 1960–2000
that you identified? Explain your thinking.
5. Create a line graph or other visual model to show the pricing trend. Be sure
to include the current price in your model.
6. Predict the item’s price at a future date. Use your calculations and visual
model to justify your prediction.
7. Organize your analysis, prediction, explanations, and visual model in a brief
news article. Your completed article will be submitted as your portfolio
assessment.
© 2015 Connections Education LLC. All rights reserved.
Historical Pricing Chart*
Item
1960
Price
1970
Price
1980
Price
1990
Price
2000
Price
gallon of
gas
$0.25
$0.36
$1.19
$1.35
$1.26
U.S.
postage
stamp
$0.04
$0.06
$0.15
$0.25
$0.33
loaf of
bread
$0.20
$0.25
$0.48
$0.70
$1.72
dozen eggs
$0.46
$0.59
$0.89
$1.00
$0.96
fast food
hamburger
$0.15
$0.30
$0.50
$0.75
$0.89
movie ticket
$0.69
$1.55
$2.60
$4.23
$5.39
* All prices are U.S. averages.
© 2015 Connections Education LLC. All rights reserved.
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