Table of Contents Sail Area and Perimeter


Materials • One de-rigged instructional boat. • Dinghy Main Sail (1 per group of 3) • Dinghy Jib Sail ( 1 per group of 3) • One Design Sail (1 per group of 3) • Clipboards (1 per group) • Measuring tape (1 per group of 3) • Students sheets (1 per student) • Calculators (1 per group)


Sailing Centers


Complete Parts I and II on day 1, with a lesson on rigging and de-rigging. Complete Part III on day 2. Students measure and calculate sail area and perimeter and then apply that knowledge to their sailing. The primary goal of this lesson is for students to connect math and sailing with engineering and design.


Formal Classroom Settings


Complete Parts I on day 1, review the classification of triangles with students. Have them practice solving problems using a square to find the area of a triangle. Complete Part II on day 2. You will need to contact your local sailing center to borrow a few sails. The size of the sail and the condition of the sail does not matter. Omit Part III. Implementent Part IV on day 4 and the Extension Activity on day 5.


Career Connection


Sail Designers, Marine Surveyors, Architects, Engineers, and even construction workers need to know geometry. Have students interview any of the previously listed professionals. Inviting a marine surveyor to bring in blue prints or CAD drawings they may be working on is a great connection for students. Please see the video links in reference to North Sails in the Resource section of the Module.


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