However, whenever I interact with people discussing it, I think of Tom Lehrer.

(x - 45)/2 = lost gains. If you still fit through doors, put that plate back on

The derivation is a bitch left as an exercise for the reader

I may need to rethink my life.

…and yet the hardest parts of being a trainer has been a) counting reps and b) subtracting 45 from a number and dividing it by 2.

The real problem is underfunded schools not having the resources to address student needs, not the teaching aims themselves. Imagine if every classroom maxed out at 15 students, just for one simple thing we could do to start fixing shit.

Here are CC standards for 11-12 grade reading and writing
https://www.thecorestandards.org/ELA-Literacy/W/11-12/
https://www.thecorestandards.org/ELA-Literacy/RL/11-12/

Did they ultimately get rid of Common Core? Or did people finally just shut up about it?

I understand the parents who struggled to help kids with their homework, since they weren’t taught the same way and if you’re just thrown into it, it’s hard to figure out. Though how it turned into this big hullabaloo was an extreme reaction. Mental math has become very easy for me since learning it, which makes me think many of us missed out on a method that could’ve helped us a lot.

So, no, I don’t struggle with math. What I struggle with is the confidence to believe I’ve come to the right answer. I usually do math calculations more than once because I doubt myself. My first college mathematics professor gave me a reality check about it once, as he was getting frustrated that I wouldn’t put my hand up even though he knew I had figured out the answers. I can still see him standing there, going, “Come on, Whats_your_reasoning, I know you’ve got it. What’s the answer? Just say it!”