Reply To: HS Music Theory
I would do a simple DIY version: find an image similar to what you need on Google Images. If you can only find an octave keyboard image, copy / save it, put it on a Word document and paste it again (horizontal orientation). Then print however many copies you need, back them on some oaktag / thick paper and laminate them. In my area there’s a Lakeshore Learning Store; they have cheap laminating — 19 cents per square foot; you operate the machine.
I can’t tell you how many times I’ve done this process in my career with poster ideas found online, classroom signs etc. …. I used to bring things to Staples to be laminated, but they charge a lot. Your school may also have a laminator.