A neat way to encourage collaboration w/this problem by Dane Ehlert openmiddle.com/slope-from-two…

Great 1st day with students! I look forward to seeing the math symbols and reading the math autobiographies.

Check out Open Middle! Great and fun questions that should be used in all math classes. Let's #UpTheDOK and help grow our students' brains!

We have started our first day in DC...on the way to Arlington. @dcmavs2015 #mavsindc

Bus 6 at the White House! @dcmavs2015 #mavsindc

Having a great day in DC! @dcmavs2015 #mavsindc

A new problem from Jeffrey Mashbitz on finding the intercepts of linear equations openmiddle.com/finding-interc… #F-IF.4

A new #DOK3 problem on rational exponents from @HRSBMathematics openmiddle.com/rational-expon… #N-RN.1

Bus 5 is on the road!@dcmavs2016 #dcmavs2016

Equivalent fractions is the tag-team contribution from Bowen Kerins 🔗 and Graham Fletcher openmiddle.com/finding-equiva…

Trying my hand at writing my own function/non-function Open Middle problem for Algebra 1. mathequalslove.blogspot.com/2016/06/functi…

Excited to have a problem on #openmiddle! Love using these problems to increase rigor and differentiate instruction!

Need help with this new Open Middle problem before I submit it to the vault. I have 1 solution...whatcha got? #MTBoS

We are ready to go to DC! @dcmavs2017

#dcmavs2017

Bus 3 at The WWII Memorial @dcmavs2017 #dcmavs2017

Perfect day to tour DC @dcmavs2017 #dcmavs2017

#youngscholars #dcmavs2017 @dcmavs2017