Windsail Design

Find the equations that match the parabolic curves being considered as windsail masts.

Subject: Mathematics
Topics: Algebra--Quadratic Equations and Functions
Grades: 8 - 12
Concepts:
- Parabola
Knowledge and Skills:
- Can recognize a parabolic shape
- Can determine the equation of a quadratic function that contains three given points
- Can investigate how a family of curves can be produced by changing one parameter
- Can simplify quadratic expressions
- Can relate the coefficients of a quadratic function to their influence on the shape and position of the parabolic graph of that function

Download Teacher Guide: Windsail Design (PDF)
Download Student Lesson: Windsail Design (PDF)

WindsailsWindsails:

Sailing the ocean no longer requires triple-masted schooners--in fact you can do it on a vessel no larger than a surfboard. What's the secret to designing a windsail that can skim the surface of the sea at 20 miles an hour, yet respond instantly to a sailor's touch?
Running time 1:42 minutes.

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