Nothing all that brilliant in this post regarding the actual teaching of sine, cosine, and tangent… BUT, I do have a couple of resources that might be useful. If not brilliant, it was at least extremely effective. =)

I took the Prentice Hall California Geometry workbook, cut out and combined the tan, sin, and cos problems. I created flashcards with them (of 18 problems) and had them practice just setting them up with a partner. For example,

Then I gave them a worksheet with the exact same problems to actually finish. Be aware that we only did this after focusing on tangent alone for about 2 block days.

The template for the flashcards and the worksheet is in the Box widget.

- Print double-sided.
- The first 4 pages are the flashcard problems. Print them double-sided onto cardstock.
- I cut off 2 inches from the bottom and had them all about 3″ x3″.
- One set per partner. Teach them
*how*to use flashcards w/ partners. - Don’t give them the classwork until
*after*they have mastered the flashcards.

As for the trig introductory lesson itself, our Geometry team has been working on adapting the CPM intro of using slope, but it needs a WHOLE LOT of tweaking Especially since our students are not used to CPM, we can’t just throw it at them…

This is coming soon…