Transcript Best Practice_US_Albrecht

The Study of Triangle
Measurement: Trigonometry
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Math students learn about triangles from
a very young age.
They identify shapes, and then they
learn to measure.
They learn to use a protractor and
measure angles.
They learn the definition of sine, cosine
and tangent and calculate these ratios to
solve amazing problems.
Trigonometry
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When students move on in math they
study functions.
Angles and their respective trigonometric
ratios make beautiful functions! They
display a periodic, or repeating pattern.
Trigonometry & Excel
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You can use Microsoft Excel® with your
students to create these beautiful graphs
and investigate the relationships between
the different functions.
Sample Project
This is a sample of what your
students can create.
Why Use the Computer
Lab?
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Students can begin their study of
trigonometry in a concrete way.
Students are able to put the numbers
generated from the calculator in context.
When students create, they learn.
Investigation possibilities are endless.
This project is loaded with possibilities for
critical thinking.
Success in the Lab
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Have step-by-step directions available for
students even if you know they are extremely
proficient in technology and your subject
area.
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Have a complete example ready, but work with
the students as they are creating. A perfectly
completed project will limit their discovery.
Helpful Hints
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Have critical thinking questions ready for the
students that work quickly.
Specific Project Objective
Part 1. Students will create graphs of
trigonometric functions such as f(x)=sinx,
h(x)=cot(x) & explore trends.
 Part 2. Students will verify identities using
data.
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Pre-requisite Knowledge for
This Specific Project
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Students should know the exact trigonometric
ratios of reference angles through 360
degrees.
Students must know (or be learning) how to
convert radians to degrees.
Students must know (or be learning) how to
calculate cosecant, secant and tangent.
Students should understand and use function
notation.
Materials Available
Contact me:
Cathi Albrecht
Rockwall-Heath High School
[email protected]