MathTeachLaura

Do we know anything yet about what @desmos.com calculator notation will be allowed on the AP Stats exam, similar to the way, e.g., "normalcdf(proper labels)" TI notation was allowed?

Ooh, definitely a possibility, if I add a couple rays. Thanks!

Anyone have a good (efficient) way to create diagrams of angles in standard position? Especially ones that can display >2π rotation? #iteachmath #mathsky

Eh, depends on whether there's another step after? x^2=9, |x|=3, I'd teach both as +-3. But given x-h in either, the "split" seems necessary.

Ok, what are people doing to save good #mtbos ideas seen here? I just bookmarked on the bird site, what's the new workflow?

Did I today refer to sin²+cos²=1 as "the OG" identity (in comparison to tan and cot forms)? Yep. Do I regret it? Jury still out. Did get a laugh from the class.

These are adorable!

Ooh, I love the bit about independence - my students have a hard time with that too! (Oddly, not during probability unit, but in chi-square testing, hoo boy.)

It only ever made sense to me in certain contexts. Like product needs and sales over the week. Ok, if A takes a&b&c to make and I expect to need x&y&z on M,T,W, and I also have products BCD, how much a,b,c should I order; that's a linear of Ax+By+Cz, ok. I also do the shifted up 2nd matrix layout.

A colleague holds that the term "perimeter" only applies to polygons, and that for composite shapes involving curves the correct term is "distance around." I have never encountered this distinction (and I usually know the trivia!). It doesn't match the usage I see "in the wild" either - thoughts?

The student who folds their worksheets into paper airplanes daily (before doing them) wants to know why they failed the last quiz. It took me four mental starts to compose a reply i could actually say aloud.

Spelling was only just starting to standardize then and wouldn't get to modern notions of 'standard' until the 1800s. I am surprised to see it in sine, though; I had the impression Latin/Greek borrowings, especially for math/sci, drifted less.

Finally making the jump cuz the old place is just too toxic. Looking for my #mtbos crowd here! :) #ITeachMath