Gary Rubinstein retweeted
May I ask: what point is there to teaching and testing children in elementary school on the *names* of mathematical properties (“associate property of multiplication”, “identity property of addition”)? To me, these are so lame and boring and suck all the fun out. Is there any good reason to insist on learning the names? There are much better ways to test their understanding that a property is true, usually found in fun “contest” problems, like:
What is 10x9x8x…x(-8)x(-9)x(-10)?
(Vs “zero property of multiplication”)
What is 1/2 x 2/3 x 3/4 x 4/5 x … x 99/100?
Quick, what is 34x3 +34x7? (Vs “distributive”)
There’s a whole slew of such really fun problems, completely standard. I don’t care if you know what grownups call it. Do you understand how to use it as a “backdoor” to answer a problem immediately?
Gary Rubinstein retweeted
I don’t think you have a dog in this fight but if you did you would have shot it.
I’ll take @ellalangleymsic over Kacey Musgraves any day.
And if I’m choosin’ Texas, I’ll take Ken Paxton over James Talarico.
Gary Rubinstein retweeted
CURMUDGUCATION: Here Comes Direct Instruction, Again curmudgucation.blogspot.com/…
My Latest (Math) Blog Post: Geometry, What Is It Good For? geometrycurriculum.wordpress…
My Latest Blog Post: What Happens At TFA 35 In Vegas ... garyrubinstein.wordpress.com…
My Latest (Math) Blog Post: "Originals" In geometrycurriculum.wordpress…
My Latest (Math) Blog Post: Forgotten Geometry: Land Surveying Word Problems geometrycurriculum.wordpress…
My Latest Blog Post: Why Am I Going To The TFA 35th Anniversary Alumni Summit? garyrubinstein.wordpress.com…
My Latest (Math) Blog Post: Controversial Geometry: The Area Of A Rectangle Equals Base Times Height geometrycurriculum.wordpress…
Gary Rubinstein retweeted
Take a break from AI and read this fun post by master teacher @garyrubinstein -- it's the story of the "pons asinorum", the first tricky proof in Euclid's Elements. So much fun, with very conversational writing, and brilliant explaining and stories. geometrycurriculum.wordpress…
Gary Rubinstein retweeted
Exciting New Project! garyrubinstein.wordpress.com… via @garyrubinstein
If you like the history of Geometry curriculum, you're going to love the new project I'm working on. New blog site here: geometrycurriculum.wordpress… and don't worry the old blog site will still be up for education investigative reporting.
My latest blog post: Success Academy Sues NYSED For Inadvertently Exposing That They Have Been Gaming The US News & World Report Rankings For Years garyrubinstein.wordpress.com…
My latest blog post: By One Dishonest Measure. Debunking the latest Success Academy propaganda disguised as research. garyrubinstein.wordpress.com…
Gary Rubinstein retweeted
Happiest of birthdays to the inimitable & unsurpassable @DianeRavitch the model of what a scholar & advocate should be!
Gary Rubinstein retweeted
Dolan Buries Hatchet with Oakley, Immediately Signs Him to Flagrantly Foul Wemby daapple.com/dolan-buries-hat…
@TheDunkCentral
My Latest Blog Post: The Return Of The Reformers garyrubinstein.wordpress.com…
Last chance for FREE download of my kindle e-book of funny personal essays. If you follow me and like my blog writing, why not get the free download? The promotion ends at midnight so get it now. a.co/d/09LdSvrC
Three days left on my free promotion of my e-book. Download and read one page and if it's not funny, delete it. If you're one of my Twitter followers, you will like this. a.co/d/082pG8PZ
Three Days Left To Get Your Free Copy Of My Autobiographical E-book On Amazon! garyrubinstein.wordpress.com…











