Browsing All Posts filed under »visual math«


March 21, 2017


Possibilities abound.   EngageNY is looking for “fellows” to help develop their curriculum.  Oh, my, it is full of the vilified “not your parents’ algorithms” terms like “Hide Zero Cards,” which a quick search informs me are manipulatives for reinforcing that, say, 13 is really 10 + 3 — you represent 13 with a ten card […]

The good connections

March 16, 2017


Formulae are abstract.   Substitution into a formula can be a meaningless machination.  No longer, for the student who explained what we’d have to do to find the missing length knowing perimeter and side of a rectangle… double the width and subtract it from the perimeter.   Well…. I showed him the substitution process and […]

About the app

February 5, 2017


 I made a video of what each activity does here:   … but the actual app is testable at    

Equations and stuff.

September 15, 2016


Solving algebraic equations is, I’m thinking right this second, one of the “gateways within the gateway courses” that lots of folks don’t get through. It’s definitely a ‘thing’ that I reveled in when I learned it.   Learning that “of means times” … bang!   Suddenly I could figure out percent problems and all kinds […]

Make! Make!

August 29, 2016


Okay, I don’t ‘think visually’ so I couldn’t begin to tell you what a person could make… but I saw this   and thought… oh, even *I* could make manipulatives… really creative manipulatives… with that thing. Hmmm…   It’ll be on my grant list 🙂  (It’s over a hundred dollars on W00t today.. and I […]

Rabbit holes

May 30, 2016


An entirely too-long blurb yesterday morning on Weekend Edition was about a “rabbit hole” — the thing that happens when you get online and click from one thing to the next.      I’ve had some awesome opportunities come up from going down rabbit holes… but they’ve reached a critical mass where I need to […]


May 12, 2016


So, I figured out how to skip all the parts with Git and GitHub and pushing and pulling and what have you… and I’ve got the “app-release” version “pre-beta” at  … and I told a few people about it. So to download it, you need to tell your device (and I don’t know how recent […]