TCTM

[James Tanton @jamestanton]

Wonderful! Cheers, J.

[Jennifer BayWilliams @JBayWilliams]

Math teachers and leaders...important talking points about our national assessment. Thanks @nctm and ⁦@robertqberry⁩ https://t.co/YHxIJ5Y4m1

[Vicki Davis @coolcatteacher]

Math Problems that Unlock Student Thinking https://t.co/r3nobehZoZ with @robertkaplinsky #math #mathchat

[James Tanton @jamestanton]

Are you -- and/or your students -- explicit #explodingdots thinkers? https://t.co/HWhjZCfk7H? @GlobalMathProj

[Berkeley Everett @BerkeleyEverett]

Math Tetris: just one way to think about combinations of 100. How else do you think about it?

Video available: https://t.co/WNuvbxcheH

#mtbos #iteachmath

[Graham Fletcher @gfletchy]

I had a blast sitting down with @TracyZager and talking about the "what" and "why" behind this fluency project we're undertaking. Next fall can't get here soon enough but in the meantime, check out the link below to listen to the podcast. #elemmathchat

[James Tanton @jamestanton]

From a conversation with @Mathgarden: Have you an intuitive sense of the curvature of the Earth? Draw a 1-mile segment tangent to surface. What's your guess as to the distance back to surface at endpoint? What is the actual value? (Assume perfect sphere, R=3963 miles.)

[Berkeley Everett @BerkeleyEverett]

Math Facts or Math Relationships? @khomath has a great quote that is stuck in my brain. #iteachmath #mtbos

[Kurt Salisbury, Ph.D. @kurt_salisbury]

Here is the link @algebradesmos @mrparada16. I wanted students to be able to visualize the connections. One of the things I love about @Desmos. #iteachmath #mtbos Check out this @Desmos activity: Slope! https://t.co/TfqGxw69V3

[Pam Harris @pwharris]

We had SUCH a great #MathStratChat last week. Vote now! Which of these strategies do you like the best for 18 x 51?
Just tweet a letter or also tell why.
Go!

#ITeachMath #MTBoS #MathisFigureOutAble #ElemMathChat #MsMathChat #HSMathChat

[Dr. Kristopher J. Childs (he/him) @DrKChilds]

STOP using deficit language when referring to students...

#DrKChildsInspires
#TuesdayMotivation #edchat

[James Tanton @jamestanton]

Any rectangle and any triangle can be subdivided into any square number count of congruent smaller copies of itself. Is there a shape that subdivides into a non-square number of congruent smaller copies of itself?

[Mary Kemper @maryekemper]

That’s right! Conditional Highlighting on a spreadsheet is a wonderful thing :)

And, @AppleEDU Numbers is pretty much the best.

#AppleEDUchat

[Marilyn Burns @mburnsmath]

Quick question. Is a decimal number, say 23.45, considered to have four-digits? Or when we talk about a four-digit number, does that imply a number in the thousands? I'm not sure.

[Jo Boaler @joboaler]

I was interviewed by a young women radio host this week about my new book: Limitless Mind - she said this to me. "This really works, I read the book and had the best week of my life". This is why I am passionate about getting these messages out.
https://t.co/NFO4WaUkri

[Pam Harris @pwharris]

It's time for #MathStratChat!
Rules: tweet your favorite, clever solution or be inspired to find an equally clever strategy.

Like, RT so others can see.

#MTBoS #ITeachMath #MathIsFigureOutAble #MSMathChat #ElemMathChat #HSMathChat #T3Learns

[Janet Nuzzie @janetdnuzzie]

Mathematicians promote a 💙 of mathematics with those around them ... and work together to #mathematize their schools! :) #MathematizeChat @drnickimath
@RoutledgeEOE

[James Tanton @jamestanton]

It is possible to subdivide an equilateral triangle and a square into congruent pieces so that the center of the figure is in the interior of one of the pieces. Can the same be done for a regular hexagon? (For any other regular polygon? For a circle?)

[James Tanton @jamestanton]

Each and every whole number can be uniquely expressed in a 1 <-- (-2) machine with at most one (actual) dot per box. (eg 3=1|1|1 and -3 = 1|1|0|1). Can one do "decimals" in base -2? What's one-half? What's one-third? #explodingdots