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Lesson created by:

Kathy LaChaine
venablek@vcss.k12.ca.us
from Rio Mesa High
in Oxnard, CA
VENTURA County

Resources:
Hyperstudio Player
Hyperstudio Plugins

More Class Lessons for Technology in the Physics Lab 2000

An Investigation of Parachute Design
Summary:
After performing directed labs in class to learn the use of the motion detector in falling motion studies, the students will research parachute design and develop a model using materials of their choice. They will test their product and modify the design as needed to acheive the goals of the contest: To reach the slowest terminal speed within a 12 foot fall carrying 50grams of mass.

Students will gain experience with the design process: choosing an initial design from the research information, building the prototype, designing tests and interpreting the data, modifying the product appropriately to improve testing results, and meeting a project deadline.

Grade Level: 9,10,11,12

Curricular Area:
Physics/Physical Science

Class Time Required:
3 fifty minute periods (min), plus at least 3 days of home time (Estimated)

Standards:
This project addresses at least two of the content standards:

3.4.5 Science/Physical Science

Scientific progress is made by asking meaningful questions

and conducting careful investigations. As a basis for

understanding this concept, and to address the content the

other three strands, students should develop their own

questions and perform investigations. Students will:

repeat observations to improve accuracy, and know

that the results of similar scientific investigations

seldom turn out exactly the same because of

differences in the things being investigated, methods

being used, or uncertainty in the observation.

differentiate evidence from opinion, and know that

scientists do not rely on claims or conclusions unless

they are backed by observations that can be

confirmed.

use numerical data in describing and comparing

objects, events and measurements.

predict the outcome of a simple investigation, and

compare the result to the prediction.

collect data in an investigation and analyze them to

develop a logical conclusion.

3.8.1 Science/Physical Science

The velocity of an object is the rate of change of its position.

Students know:

position is defined relative to some choice of standard

reference point and a set of reference directions.

average speed is the total distance traveled divided by the

total time elapsed. The speed of an object along the path

traveled can vary.

how to solve problems involving distance, time, and average speed.

to describe the velocity of an object one must specify both

direction and speed.

changes in velocity can be changes in speed, direction, or

both.

how to interpret graphs of position versus time and speed

versus time for motion in a single direction.

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Learning and Teaching Activities:
Students will have previously learned how to operate the motion detector and studied objects in freefall motion and the rudiments of air resistance.

This project is not important in the content they learn, but rather the process of design and testing a parachute for a specified goal will mimic the critical thinking skills of real world of engineering.

Students will produce a written proposal based on their initial research on the web outlining the designs to be built and tested. Then they will carry out their planned testing, modifying it as needed, and submit a written report of their results. A summary of their final design and a demonstration of its use will end the project. As an added activity at the end a contest will be held for extra credit.

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Outcomes and Assessment:
Students will show understanding of the design and testing process by performing, analyzing and submitting a record of the experimental trials they develop and undertake.

The experimental record they submit will be evaluated based on the number of parameters they test, the logical sequence of tests performed, and the clarity of the report. The performance component of the project will be graded on a credit/no credit/ extra credit basis.

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Materials Needed:
TI-83 graphing calculator

CBR or CBL with motion detector

various materials for parachutes (provided by students or teacher)

a drop zone at least 10 feet high

50 gram mass (a film canister with sand, washers, or other suitable mass)

Computer with web access (and Graphical Analysis software--optional)

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Resources:
Resource 1 Resource 2 Resource 3 Resource 4 Resource 5

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