4th Grade Performance Task
Contributed by: Kentucky Department of Education (KDE)
Description:
Students compare the quality and price of different kinds of plastic
kitchen wrap. Students do simple "tests" on each of 4 samples, record
observations and do simple calculations. Then, the students must rank
the four kinds of wrap from best to worst.
This task is designed to take students approximately 45 minutes
to complete.
Overall Task Content Area:

 Physical Science
Specific Knowledge Areas:

 Properties of objects and materials
Performance Expectations:
 conducting investigations
 gathering, organizing, and representing data
 formulating conclusions from investigational data
 applying scientific principles to develop explanations and solve
new problems
National Science Education Standards:
4 B PS 1: Properties of objects and materials: Grades
K4
1.1 Objects have many observable properties, including
size, weight, shape, color, temperature, and the ability to react
with other substances. Those properties can be measured using tools,
such as rulers, balances, and thermometers.
4 A SI 1: Ability to do scientific inquiry: Grades K4
1.3 Employ simple equipment and tools to gather data
and extend the senses. In early years, students develop simple skills,
such as how to observe, measure, cut, connect, switch, turn on and
off, pour, hold, tie, and hook. Beginning with simple instruments,
students can use rulers to measure the length, height, and depth
of objects and materials; thermometers to measure temperature; watches
to measure time; beam balances and spring scales to measure weight
and force; magnifiers to observe objects and organisms; and microscopes
to observe the finer details of plants, animals, rocks, and other
materials. Children also develop skills in the use of computers
and calculators for conducting investigations.
(Use the "hot" link on the PALS home page
to check the full text of related National Science Education Standards,
if desired.)
National Council of Teachers of Mathematics:
AL1: Understand patterns, relations and functions:
Grades pre K5 a. sort, classify, and order objects by size,
number, and other properties.
AL4: Analyze change in various contexts :
Grades pre K5 a. describe qualitative change, such as a
student's growing taller
DAP1: Formulate questions that can be
addressed with data and collect, organize, and display relevant
data to answer them:
Grades pre K5 e. collect data using observations,
surveys, and experiments
Grades pre K5 f. represent data using tables
and graphs such as line plots, bar graphs, and line graphs
NO2: Understand meanings of operations and how they relate
to one another :
Grades pre K5 e. understand the effects of multiplying and
dividing whole numbers
PS2: Solve problems that arise in mathematics and in
other contexts:
Grades pre K5
RP3: Develop and evaluate mathematical arguments and
proofs:
Grades pre K5
CON3: Recognize and apply mathematics in contexts outside
of mathematics:
Grades pre K5
REP3: Use representations to model and interpret physical,
social, and mathematical phenomena:
Grades pre K5
General Instructions to the Teacher:
This task is designed to take students approximately 4050 minutes
to complete.
Students may work in groups of 4 for the experiment/activity part
of this exercise, however each student in the group must fillout
their own Data Sheet.
Students work together for up to 20 minutes. They are instructed
to notify you when finished with the group work, and then to go
on to the individual work beginning with question #1. If students
are still working together 20 minutes after the testing begins,
instruct them to cease their group work and begin individual work.
At this point, they may no longer talk. Whether or not they are
just beginning their individual work, remind students that they
now have about 25 minutes to complete the individual activity.
Students should be ready to work as soon as the period begins.
Group assignments should be made in advance. The materials should
be set out at each lab station, if possible. A central supply area,
if needed, should be easily accessible. All supplies should be clearly
labeled.
Materials for "Plastic Wrapped":
At this station students should have:
 4 different brands of plastic wrap (all the same width) in their
original packaging showing the price for each brand, each box
marked from A  D.
 a bowl
 several small weights
 pen or pencil
Advance Preparation:
Each brand of plastic wrap should be labeled A, B, C, or D.
Teacher: 1) Label boxes and set up student workstation.
Student: 1) Place wrap over bowl.

2) Perform tasks.

Safety:
 Be careful.
 Teachers and students should always exercise appropriate safety
precautions and utilize appropriate laboratory safety procedures
and equipment when working on science performance tasks.
Extensions/modifications:
 Rubric language should be expanded and targeted to the specific
NCTM standard(s) to be measured.
