calculators

at the beginning of precalculus, or as soon as all students have graphing calculators, i need to specifically teach students strategies for using their calculators and how to enter entire expressions into the calculator using parentheses in the correct way. i figured that all out myself because no one ever taught me, but it'd be great to actually teach them so they don't learn after a bunch of errors!

precalculus teaching notes

• Specifically teach how to label the x axis in radians when teaching how to graph sine and cosine.
• Require students to write out trig identities periodically to help with memorization?
• Require students to derive identities?
• Spend a longer amount of time teaching the lesson about solving trig equations, especially as related to the kind that have more solutions than normal.