Tag Archives: Dynamic Geometry

Branding isn’t about math. Are you sure about that?

At around Pi-hour on Friday afternoon we successfully launched our new website. The night before (the night of the big storm for Bay Area folks), Andres and I were out with a dear former colleague and I mentioned I was going to blog about our new branding, new website, and new name. She said, “You … Continue Reading ››

Parents, Children, and Functions in Sketchpad

Functions are hard for students. Students seem to master various families of functions – linear, polynomial, exponential, trigonometric, and so forth. They can graph them, evaluate them, transform them, and answer a variety of questions about them. But ask even our better students a question that’s out of the ordinary and we’re likely to be taken … Continue Reading ››

Writing Mathematics with Sketchpad

In a recent blog post, Karen Coe referred to Conrad Wolfram’s opinion that programming is to mathematics what composition is to English. I’ve taught programming and written a lot of Sketchpad code, and I appreciate Wolfram’s analogy. In English class, students read books, poems, short stories, essays, and articles—but to gain a deep appreciation for … Continue Reading ››

The key to Everything Around You Is Right in Your Pocket

"You won't be carrying a calculator with you everywhere you go." A friend of mine recalled his math teacher telling him that. I'm sure we've all heard this or even have said it before ourselves. However, this particular retelling came over twitter, posted from an iPhone, that he keeps with him everywhere he goes. While it … Continue Reading ››

Testing… 1, 2, 3… testing. This is a test. This is only a test.

Nothing like your back going out to make you feel old. Happens to me every few years, and comes out of the blue. Last time it was when I was brushing my teeth. This time it was tying my shoes. Anyway, after a hospital visit I was told to take a couple of days … Continue Reading ››

Touching the Math

Sketchpad has always been great for learning by doing. You can create a triangle and then manipulate the angles with your mouse and observe the results. There is something really primal, though, about using an iPad or a Smart Board, reaching in and grabbing the geometry with your bare hands. … Continue Reading ››

What’s up with Key? A Response to Dan Meyer

The other week Dan Meyer sent out this tweet. While we appreciate the compliment (and the resulting increase in traffic), it's the first part of that sentence … Continue Reading ››

What Constitutes Malpractice?

Two months ago I was in a meeting with a nationally recognized leader in math education when he said, “Any math teacher who does not use technology with students is committing malpractice.” Now, I have been a strong advocate for the use of technology tools in instruction since I started teaching in 1993. But, I … Continue Reading ››