During the St. Patrick’s Day parade in Chicago, the local plumbers union dyes the Chicago River emerald green. Students learn what PPM (parts per million) means and attempt to figure out how much dye is used to sufficiently color the…

In this activity students approximate the volume (through finding surface area) of three different pieces of chocolate. The chocolates are shaped like a heart, a bat (for Halloween) and a chocolate turtle irregular shape.

Brian Shoemaker, a Newton, MA mathematics teacher, saw this Dunkin Donuts Mazda traveling down the road. He wondered if that size coffee cup could really have coffee in it. Wouldn’t the car rock back on its rear bumper? How much…

Act One: Check out all of the pennies! What questions come to mind? If you want the most money, which container should you pick? What information do you need to answer this question? What assumptions must you make to solve…

Gumball Machine Problem from Brian Marks on Vimeo. Gumball Machine Problem from Brian Marks on Vimeo. Show Brian’s video to your class and let your students cogitate, estimate and calculate. Sheet with only a still shot from the video and…

In 2010, March was so rainy that flooding was the topic of every newscast and many, many conversations. The picture shows how students went home from school in Wayland Mass. on March 31st – on a Duckboat. This two page investigation asks…