Subitize and “Groupitize”… I learned a new word!
First there was Subitizing, and now there’s… Groupitizing! We all are born with an innate ability to subitize, which means to see a small amount and instantly know how many …
Math Visuals: Just Entertaining?
“Visuals in math curriculum are often entertaining, not educational” – (paraphrased from Steve Chinn) The birds are cute, but do they develop number sense? The science of math shows that …
What is Decoding Math?
When you think of “numbers” – what comes to mind? For most adults, what we picture for numbers is really what we call numerals, such as “7” or “28”. These …
You’re Doing It Wrong… Stop the Counting!
A while back, one of my favorite local shows Chronicle had an episode called “You’re Doing It Wrong!” Initially put off by the title – I mean, how dare you …
Number Sense: What is it anyway?
Recently, during a discussion at the start of a course that would explore dyslexia and dyscalculia, teachers were asked what they hoped to learn about math. The most common response: …
My Favorite Manipulatives
Not all math manipulatives are created equal! Catalogs are full of colorful objects, enough to boggle the mind of even the most experienced teachers. So how do we make sense …