Thursday, December 10, 2015

Surface Area and Volume

I made this foldable to put all of the formulas on one page. It has saved time and allowed more space for practice. I just do one or two examples from the worksheet for each shape.

For the students I teach, the textbook doesn't have enough practice problems that are simple enough. One, maybe two, then they're off to multi-step, challenge problems. I use KutaSoftware to fill the gap. I purchased Infinite Geometry a few years ago and I love it. (They're not even paying me to say this, but they totally should.)  The free worksheets are great... but kids are smart. Mine figured out pretty quick that the answers are online. Is that considered cheating, or just using your resources? Now I just make my own. Problem Solved.

Wednesday, November 25, 2015

Special Right Triangles

I teach Special Right Triangles using proportions. My students create 2 notecards: one with a 45-45-90 unit triangle and one with a 30-60-90 triangle. The students never really understand why the 30-60-90 notecard needs two versions. They just know that it works.

With this unit we also do a review of rationalizing denominators.