Dan Meyer (@ddmeyer) / X

Dan Meyer

32.8K posts

Dan Meyer

@ddmeyer

Currently: @DesmosClassroom @Amplify. Previously: high school math teacher. Always: recreational math user.

Oakland, CA

danmeyer.substack.com

Joined July 2007

Pinned
Dan Meyer
@ddmeyer
Aug 28, 2024
This is the best thing I've ever had a hand in making. Click in and check it out. 👇
Amplify
@Amplify
Aug 21, 2024
🚀 Amplify Desmos Math is LIVE! 🧡 This groundbreaking K–12 math curriculum sparks curiosity, boosts engagement, and builds lifelong proficiency in math. 🔎 Discover more: amplify.com/adm #MTBoS #ITeachMath
19K
Dan Meyer
@ddmeyer
Jan 23, 2020
Pre-2010, 50g of crack-cocaine got you a mandatory minimum 10 years in prison. Post-2010, that threshold was raised to 280g, which resulted in this .... uhhh suspicious drug seizure graph. #OMGraph #iteachmath h/t @JohnHolbein1 econweb.umd.edu/~tuttle/files/…
Dan Meyer
@ddmeyer
Dec 30, 2014
So glad the @nytimes found an answer to their question from 2012, "Is Algebra Necessary?" [h/t a commenter]
Dan Meyer
@ddmeyer
Mar 30, 2023
Watch a teacher make roughly ~1,000 instructional decisions in about 45 seconds. Only a few of them are about the lesson but the lesson depends on ALL of them. This is one of the hardest things to explain about teaching to people who have never taught.
00:00
275K
Dan Meyer
@ddmeyer
Nov 19, 2020
My toddler’s walking around calling this his iPad and please no one mess this up for me. 🙏
Dan Meyer
@ddmeyer
Jan 23, 2020
Replying to @ddmeyer and @JohnHolbein1
That utterly implausible spike in 280g seizures, each one triggering a 10-year prison sentence? Would it surprise you to find out it disproportionately comprised Black & Hispanic people? #OMGraph #iteachmath
Dan Meyer
@ddmeyer
Apr 24, 2020
Bravest act by a comedian in any of our lifetimes: pinning the punchline of a joke to an adult crowd's recollection of FOIL.
Tom Brennan
@Brennanator
Apr 24, 2020
Pissed off by Trump’s Lysol “jokes”? That’s not just emotion, it’s mathematic equation at work. @darryldarryl_ explains: x.com/darryldarryl_/…
Dan Meyer
@ddmeyer
Feb 25, 2020
Help me understand this ONE Venn diagram in my first year teaching and I would have been 10x more effective. This one right here.
Dan Meyer
@ddmeyer
Sep 25, 2018
(1) Teachers should prepare with purpose for their lessons. (2) Students should understand the purpose of their work by the end of class. Neither of those goals requires posted objectives at the start of class.
Jess Tilli
@JessicaTilli1
Sep 25, 2018
If math is supposed to be discovery-based, what do my fellow math minds think about posted objectives? Do they take away from the opportunity for students to figure things out? @ddmeyer @gfletchy @robertkaplinsky @joboaler #mathchat #math
Dan Meyer
@ddmeyer
May 3, 2019
28,000 comments at my blog over 11 years. Today's comment from Karl might be my favorite. blog.mrmeyer.com/2019/it-isnt-e…
Dan Meyer
@ddmeyer
Dec 18, 2022
When salary isn’t keeping up with inflation but there’s hot chocolate in the teacher lounge.
Secretary Miguel Cardona
@SecCardona
Dec 17, 2022
Teaching isn’t a job you hold. It’s an extension of your life’s purpose.
78K
Dan Meyer
@ddmeyer
Sep 19, 2019
level of worry █ 　　 █　 █　 █　＿ inhabitability of losing our planet users
Vince Ulam
@VinceUlam
Sep 19, 2019
@Desmos Please do not push activism at your users or you might lose them:
Dan Meyer
@ddmeyer
Mar 9, 2020
EVERY DAY EXCEPT MARCH 14: "Math isn't about memorizing random bits of information." MARCH 14: "PRIZES FOR ANYONE WHO MEMORIZES 500 DIGITS OF PI"
Dan Meyer
@ddmeyer
Jul 18, 2019
Never let your students forget that loads of math is just noticing stuff and making up names for it. #iteachmath
Fermat's Library
@fermatslibrary
Jul 18, 2019
A golygon is any polygon with all right angles whose sides are consecutive integer lengths.