## Alg II Files: Inequalities

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(More files and FAQs here) Oh, holy moly. I thought it was a good plan to have all the inequalities in one chapter, like I did with equations and graphing. We could revisit all of our graphs and equations again, notice similarities/differences…yeah, not so much. Much like any traumatic event, I’ve blocked out many of the details. I just remember ending each period completely frazzled.

So, well, here you go. Do with it what you will.

(file) I tried doing the “test each region” method of compound inequalities. I’m pretty sure I don’t like it and prefer the draw-each-number-line-then-shade-overlap method.

Here’s some homework:

(file) Hey, you know what would be really cool?  If we did a notice and wonder with some pre-solved absolute value inequalities!

(blank file and file with solutions) Oh, wait, I meant “not cool.” How I was being tested this day, when after 10 minutes one group’s contribution was “they all had absolute value bars.” So we did some formalized notes the next day.

(file) I just really don’t want to talk about absolute value inequalities, okay? Let’s talk about something more pleasant, like two-variable inequalities. Happy sound of everyone shading!

(file and homework file). Then I tried combining a graphical approach with quadratic inequalities:

(file) No. Just no. To be honest, even though it’s in Algebra II, I’ve always kept these until Precal and taught it using sign charts. I think that’s a good place for it.

We did all love some systems of two-variable inequalities!

(file) Now would have been a great time for linear programming, but we were running into final exams, so I just did one more lesson: radical inequalities

(file) You can see here I went back to the draw-two-lines method of finding the solution.

Then this chapter was finally done and we had a study guide:

(file and video key part 1 and part 2) And I think that’s all I want to say about this chapter!!

Category: Alg II | Tags: