Friday Fave for February 3

This video is a math teacher’s dream.

So many possible questions, including How long will it take to mow the whole lawn? But before you can answer that sort of question, you’d better make sure you’ve got the set-up right.

That’s where Lawnmower Math comes in. We set the virtual stake nice and deep in the calculator’s ground. You decide how big that stake should be. What math do you need to know in order to mow both completely and efficiently?

Students estimate.

Then they calculate, and then generalize. Building algebraic understanding on top of numerical relationships is what this summertime, lemonade-sipping, lawn mowing version of Central Park is all about.

It’s challenging and beautiful—you and your Algebra, Precalculus, and Calculus students should give it a whirl.