# Flickr, Ken Lund Welcome to: Zipline Mathematics Focusing on: – STEM – Algebra I – Inquiry – Modeling.

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Flickr, Ken Lund Welcome to: Zipline Mathematics Focusing on: – STEM – Algebra I – Inquiry – Modeling

Flickr, Ken Lund Real-life Problem Holly Mountain needs more revenue – Money from skiing in winter is not enough

Flickr, Ken Lund Board of Directors They have approved the use of the slopes for zipline use in the summer

Flickr, Ken Lund Problem – Part 1 Insurance company says the usual zipline equipment not safe enough

Flickr, Ken Lund Problem Part 2 You must create a zipline carrier that: – attaches to the existing zipline – travels within a certain range of speed – provides a smooth, consistent descent – is safe – is easily used

Flickr, Ken Lund Modeling Since we are not at the resort: – Fishing line represents zipline – Ping-pong ball represents a person – Minimal speed is 20 inches per second – Maximum speed is 60 inches per second

Flickr, Ken Lund How can we calculate speed? What formulas could be helpful?

Flickr, Ken Lund distance = rate x time

Flickr, Ken Lund Low Cost is Good Materials UsedCost for MaterialsMoney Spent Kabob Stick\$10 \$ Duct Tape\$12/inch \$ Masking Tape\$6/inch \$ Straw\$13 \$ 3 by 5 card\$18 \$ Paper Clip\$25 \$ Washer\$10 \$ Total Spent \$

Flickr, Ken Lund Engineering Design Process What is it?

Flickr, Ken Lund Engineering Design Process http://cromwellvalleyes.bcps.org/event_highlights/steam

Flickr, Ken Lund Identify a problem Research and Brainstorm Several Solutions Design and Test Evaluate and Communicate Redesign Engineering Design Process

Flickr, Ken Lund A successful design… meets the design criteria. Is NOT too expensive.

Flickr, Ken Lund Criteria Reminder You must create a zipline carrier that: – attaches to the existing zipline. – travels at least 20 inches/second. – travels no faster than 60 inches/second. – provides a smooth, consistent descent. – does not allow harm to ping-pong ball. – is easily used.

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