Grade:  Fifth Grade
Subject:  Mathematics
Topic:  Fractions
2/26/2008

Performance Task – GRASPS

            Goal - You will be able to add and subtract fractions with unlike denominators by finding the least common multiple.  You will be able to out your answer in simplest form by finding the greatest common factor.

Role -  You will be a fraction detective.  You will write down the steps necessary for fraction addition and subtraction as well as practicing these skills for your very important case

Audience -  You will be reporting your results to the fraction police, who will  then determine if a crime has been committed.

Situation -  You have been offered by another 5^th grader to trade some items. The items you the other student wants from you are:  1/3^rd of your lunch, 2/5ths of your books, and 5/8ths of your pens.  In exchange you will receive:  2/6ths of their lunch, 1/7^th of their pencils, and 3/4ths of their bubble gum.  You must figure out whether the trade you are making is a fair one.  To do so you must be able to add and subtract fractions with unlike denominators and then put these fractions in simplest form.  To complete this task you must decide if what you are trading is equal (ie. equivalent fractions). 

Product Performance -  On a poster you will show the items that have been offered as a trade to you (2/6ths of a lunch, 1/7^th of pens, and 3/4ths of bubble gum).  You will then show the addition of these items  which will have unlike denominators and put your answer in simplest form.  Next you will show the items you are offering in return (1/3^rd of your lunch, 2/5ths of your books, and 5/8ths of your pens), add these fractions, and put the answer in simplest form. Then you will write an informational paragraph explaining why this exchange is or is not a fair deal. 

Standard/Criteria for Success - see rubric

Making A Poster Rubric: Fractions are Fun

Teacher Name: Mr. Rosenbaum


Student Name:     ________________________________________

CATEGORY	4	3	2	1
Content - Accuracy	All fraction addition is done correctly and all steps are shown.	The majority of all fraction addition is done correctly and the majority of steps are shown.	The majority of fraction addition is not done correctly and the majority of steps are not shown.	All fraction addition is done incorrectly and no steps are shown.
Required Elements *List items offered to you in trade. *Add those fractions together and put the answer in simplest form. *List items you will be trading. *Add those fractions together and put the answer in simplest form. *Compare the fractions. *Paragraph explaining if this is a fair trade.	The poster includes all required elements as well as additional information.	All required elements are included on the poster.	All but 1 of the required elements are included on the poster.	Several required elements were missing.
Attractiveness	The poster is exceptionally attractive in terms of design, layout, and neatness.	The poster is attractive in terms of design, layout and neatness.	The poster is acceptably attractive though it may be a bit messy.	The poster is distractingly messy or very poorly designed. It is not attractive.
Grammar	There are no grammatical mistakes on the poster.	There is 1 grammatical mistake on the poster.	There are 2 grammatical mistakes on the poster.	There are more than 2 grammatical mistakes on the poster.