I was asked last week to teach a guest lesson for 3rd graders on fractions using Everyday Math. The book had some nice lessons, including one that involved [...]
I finally tried my hand at a video explanation of a mathematical idea I like. This is part 1 in a short series on the Pythagorean Theorem. It starts where [...]
Take any quadrilateral, like this one then mark the midpoints, and connect them up. It sure looks like we’ve built a parallelogram, doesn’t it? The [...]
(Click here for Part I or Part II) Recall the puzzle: Step 1: Choose a starting number. Step 2: Square the number. Step 3: Sum up the digits of that [...]
(Click here for part I) Recall the puzzle: Step 1: Choose a starting number. Step 2: Square the number. Step 3: Sum up the digits of that number. Step 4: [...]
One of my students yesterday shared an idea with me that he had kicking around in his head for a while, which he called continued multiplication. Essentially, [...]