Resources for Trigonometry
Trigonometry Project: Finding Position at Sea
Download Word
doc OR pdf
Download Answers
(Word doc)
Consequences of errors in measurements
Two GSP files created by Alan Benneto of Westbourne
Grammar School can be downloaded here, to accompany practical work
in
trigonometry. The files help students understand the consequences
that
errors in measuring distances or angles have on the calculated distances.
Both the files show a situation where a height is to be calculated
by
measuring the distance to the base of the tree/spire etc and the
angle of
elevation. The first file (download here)
enables students to make small
changes to the measured angle and to observe the changes in the
calculated
height. The second file (download here)
enables students to make small
changes to the measured distance and to observe the changes in the
calculated height. When students measure both the angle and the
distance,
they can get errors from both sources, which may compound or cancel
out.
These files are useful for putting into context the different results
for
the height that different members of the class have found.
Applets for Trigonometry
There is a wonderful collection of applets for teaching trigonometry
available for use over the web, or for purchase from the Japanese
"Manipula
Math Applet Collection" by IES.
http://www.ies.co.jp/math/java/
Some of our favourites are The Crane (occasionally spelt Clane),
KANRAN.shtml,
sin t = a, the sine box and the cosine box.
Land Division Project
Practical project for locating a new fence on a farm property.
Download as .zip file
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