Trigonometry with Algebra 2

Since this May may be my last month teaching math (for a while? forever? I doubt my departure from math will be permanent … more on the story behind this later), I thought I’d get into the swing of things and connect back into the theme of my blog by declaring that May is Maryland’s Math Madness Month! [To give due credit: this motto was originally thought up by my father as a way I could get kids excited about taking the Algebra HSAs, coming up now in less than two weeks.]

To kick off the month of math madness, I wish to ask other teachers of Algebra 2 with Trigonometry (A2T): how do you balance covering all of a (full-year or full-semester) Algebra 2 course in a reduced time-frame so that there is room in your course also for Trig?

A2T Collage

I suppose there are two main options for dealing with this addition of new material into an already full course: leaving out pieces of content, or teaching all the content at a faster pace.

This is something I think about every year I guess, but even moreso recently when helping students with their Algebra 2 Twilight make-up coursework and having discussions with the Precalculus teacher about what he will expect my students to bring with them to that class.

The Twilight students had question after question to answer about completing the square, which is a method I don’t cover when teaching A2T. For me, solving quadratics by factoring, “doing the opposite”, and using the quadratic formula is exhausting enough, both in the sense that it exhausts the techniques required to solve quadratics of every form, and in that my students are tired of so many methods without adding a fourth. My students have been know to complain that they are learning something new every day in my class (!).  Am I wrong for leaving out this method? Should I perhaps teach completing the square instead of the quadratic formula since it shows deeper understanding of the math involved? I don’t have enough time to do both (plus the other two methods I mentioned, which are even more fundamental).

Similarly, I treat complex numbers very lightly (last year, with the 9++ snow days, I even skipped them!). And I hear on the web about some Algebra 2 teachers teaching rational functions, which I never even conceived of as an Algebra 2 topic, since gaining an abiding understanding of polynomials is challenge enough.

So I guess that lands me primarily on the side of leaving out content. A faster-paced curriculum would leave more students lost, and I do not have selection criteria for entering the class as some teachers might. Additionally, this relates to my philosophy of math teaching, that it’s better to learn fewer things deeply than to shallowly cover everything. I try to focus my attention on the things that connect A2T to prior math and future math (e.g. “doing the opposite” as equation-solving technique and function transformations), that connect it to other subjects, that engage students with project-based learning, and that highlight big picture concepts and skills.

But it’s still a struggle, and I doubt myself (maybe I really should be teaching completing the square; maybe conic sections are more important than my Olympics research project and should replace it in my choice of topics). Especially since that Precalc teacher is counting on me to teach them certain things they will need when they arrive in that class (and just as the Calculus professor is counting on Precalc teachers to cover certain key topics).

So, A2T teachers, how do you deal with the pressure? Do you teach at hyperspeed, or what topics do you cut? [Other teachers feel free to weigh in too 🙂 ]

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6 Comments

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6 responses to “Trigonometry with Algebra 2

  1. I’m not an algebra 2 teacher, but my son just took algebra 2 last year. I’d say that rational functions are definitely an algebra 2 subject. Solving quadratics is algebra 1. It sounds like your problem is trying to teach algebra 1, algebra 2, and trig all in one year. Push some of it back to algebra 1 where it belongs, and there might be enough to get a flavor of trig.

    • nyates314

      True, that is a big part of the difficulty. The Maryland Algebra I curriculum leaves out quadratics, mainly because it adds in some basic statistics & data analysis techniques. Then the big state high-stakes standardized math test (HSA) is taken by all students finishing Algebra I and Data Analysis in May of their 9th (or 8th) grade year.

      Since the HSA is a big part of determining whether students can graduate high school, I doubt I’ll be able to convince Algebra I teachers to re-introduce quadratics, which are not covered by the test. Maybe when the new Common Core standards get here?

  2. What’s Algebra 2 Twilight? Is it just something at your school?

    • nyates314

      Oops, sorry for not explaining that!

      Twilight is an after-school credit recovery option, for students who have taken and failed a course the first time around. Like summer school, but after-school during the school year, and more computer-based than teacher-based. Twilight students sometimes seek out teachers to help them understand the concepts involved (better than the computer explaining it to them) though.

      This year, I’m teaching engineering to some seniors who are taking Algebra I, Geometry, and Algebra II courses in Twilight. Since I’m also a math teacher, I’ve helped some of them (and a few more students who are not mine) with their Twilight coursework.

      • nyates314

        As far as scope, it’s citywide; I think most (if not all) Baltimore City public high schools offer Twilight.

  3. Pingback: Roles « Maryland Math Madness

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