natalie cogan

Estimation 180 is BACK! #estimation180 #iteachmath #mtbos My newsletter is migrating to andrewstadel.com so join me there.

Math would be a lot funnier if we allowed sets to have more than one median. Do you know why? Because they'd be called co-medians!

Teachers… what would you say is your ultimate goal for students?

Love this point on the new @Assess_THAT episode quoting @leeannjung, "Formality is not akin to validity." Important to ponder for those who automatically trust curricular resource canned assessments over their own assessment architecture.

@pwharris For both fractions there is a difference of 5 between the num are denom. the 5 units in the 6/11ths is smaller than the 5 units in the 4/9 because of the size of the cuts (denom) which means 6/11 is greater since 6 is closer to 11.

It's time for #MathStratChat! Rules: post your favorite or a clever solution! It's also fun to comment on other's strategies. Tell us about your reasoning. Like/Retweet so others can see! #MathIsFigureOutAble #MTBoS #ITeachMath #MathEd

Loved being with these brilliant Grade 2s and 3s who were so engaged in BTC. Loving the K-5 book! Can you guess the task? @MaeganGiroux @pgliljedahl @MackenzieGlenPS

I'm attending the 2024 Make Math Moments Virtual Summit from @makemathmoments #mmmsummit2024 RT if you think others will find this helpful 🙌 summit.makemathmoments.com #mmmsummit2024

When…. WHEN will we stop labeling other ppls babies?! We would NEVER call our own kids “low kids” or “iep kids.” It seems small, but LANGUAGE matters. It impacts how we show up for kids.

Get familiar with the mesmerizing math art of MoMath’s Visiting Professor David Reimann (@drMathArt), like these representations of integers 1-100. What are some patterns you notice? View more: drmathart.com/Artwork.php.

I wish I was taught this way of finding the greatest common factor when I was in school

@howie_hua 4 groups of 25 is 100. So 12 groups (triple-triple) is 300. 25 makes me think quarters.

It's Mental Math Monday on Christmas! How would you mentally calculate 12×25?

Do you know why a negative divided by a negative equals a positive? If not, find out in 40 seconds.

@howie_hua I’d do 240 + 120 so times 10 and times half of that put it together for 360

It's Mental Math Monday! Math teacher Jake asks how you would mentally calculate 24×15.

@pwharris This from my grade 5 daughter. 200 + 200 = 400 40 + 50 = 90 9 + 2 = 11 90 + 10 = 100 100 + 400 + 1 = 501 me: 250 + 251 250 + 250 + 1 = 501

It's time for #MathStratChat!Rules: post your favorite or a clever solution! It's also fun to comment on other's strategies. Tell us about your reasoning. Like/Retweet so others can see! #MTBoS #ITeachMath #MathIsFigureOutAble #Elemmathchat #MSmathchat

Are your ss struggling w/math facts? @JBayWilliams reveals we need to build on ss strengths. Ss need explicit strategy instruction which is NOT the same as direct instruction & practice should be centered around choosing/using strategies, not drill and kill. #NCTMDC23

@howie_hua Eliminate 1/4 by making it 5 - 2 1/2.

It's Mental Math Monday! How would you mentally calculate 5 1/4 - 3 3/4?

@DodaroMrs Love this one!

Building patterns with the same numbers in the pattern rule. Which pattern grows more quickly? Why.

We got you Leafs Nations!!