Category: unit analysis

The Review Day: Unit Analysis and Scale Factor

There seems to be three sacred cows in mathematics education: the worksheet / exercise set the review day the exam It is not surprising that these three feed off one another, and make up the bulk of assessment in the typical mathematics classroom (including my own).  Here’s my disclaimer: While I have been known to …

Gummy Bear Revisited

The giant gummy bear problem has been floating around the blogosphere for a while. When I first saw it, I knew I wanted to use it. I finally have the perfect opportunity in Foundations of Mathematics 20 this year. (Saskatchewan Curriculum). History of the Problem (As far as I know) Originally presented by Dan Anderson …

The Mathematics of Laundry Soap

The grocery store is a brain workout for the mathematically inclined. Not only do the varying metric and imperial conversions tease out the micro-savings of bulk, but neon yellow discount signs encourage percentages and good ole’ multiplication tables. Often you find adults transfixed in a complex division trying to figure out which ham will be …