Making a Vector in Desmos

A couple of years ago, during a workshop on transformational geometry, a participant objected when I used and recommended GeoGebra and not Desmos. Her main argument was that students love Desmos. Fair enough, but that does not make up for the fact that Desmos is about graphing, while GeoGebra includes the many basic and not-so-basic… Continue reading Making a Vector in Desmos

Visual Algebra

I will be teaching two instances of my Visual Algebra workshop this summer: grades 7-11, June 27-30, in Oakland; and grades 6-9, July 25-27, in Saint Louis. (More info). This is probably the topic I have presented the most often in the last 25 years.To many students, not to mention teachers, parents, and administrators, algebra… Continue reading Visual Algebra

Animated Demonstrations

New on my Web site:→ Animated slides on the Lab Gear model for signed number arithmetic.Note that for each operation, the model is based on what students already know. For addition, you put down the first number, then the second number, and finally count. For subtraction, you put down the first number, take away the… Continue reading Animated Demonstrations

Programming and Math Education

Some responses on Twitter made me realize I was probably not clear in yesterday's post where I argued that computer programming is a kind of literacy. Some people say that students should be exposed to computer science because that's where the jobs will be in the future. There may be some validity to that, but… Continue reading Programming and Math Education