These two worksheets should be printed out. It has been scaled so that when pupils measure with a ruler each 'box' is 1cm x 1cm. Pupils take the required measurements and are asked if they have observed any similarities between O/A.
The tan ratio is then introduced! Lots of calculator use is encouraged. Find out the tan of 30º, what about 45º? 1? What does that mean?
Feedback would be appreciated as I am a student teacher.
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Great way to secure relational understanding of trigonometry as opposed to just a procedural approach.
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We should all discuss similar triangles/ratios when teaching trigonometry as it would deepen students' understanding of trigonometric ratios.
Really nice resource. Ties in well with similar shapes and ratios
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