The Surprises Within a Triangle’s Angles Discovering what is interesting and unexpected about a triangle's angles. What twists have I unintentionally spoiled for my students over the years?
Universal Themes in Math? With Fractions!? What if we used a universal theme to guide our study of fractions? These very big ideas get students thinking about fractions in a new way.
Fill ‘er up with Clam Chowder! Sure gasoline seems expensive. Until you try to fill your car up with other liquids!
Making Awful Graphs Sometimes we can learn a lot by doing something the wrong way. Here are six ways your students can purposefully design awful, misleading graphs.
Make A *Better* Calendar! The calendar is a source of fantastic factoring problems with many social studies add-ons. Why 12 months? Why 30 (or 31 or 28) days? Why are weeks 7 days long? Why don't they fit into the months (or the year!)? Why did we do this to ourselves!?
Which is longer: a Ray or a Line? Let's move beyond memorizing definitions and get kids grappling with the fascinating concept of infinity!
The Coloring Problem How few colors can you use to fill in a map so that no neighboring regions are the same color?
Math Game: The Game of 100 The Game of 100 is a simple game requiring no supplies, yet it opens up a rich world of exploring strategy and a little mental math.
Math Project: Disneyland Parking Structure Let's develop a math project to challenge students who have demonstrated a mastery of multiplication and are ready to explore its applications. We'll count the parking spaces in the Disneyland parking structure!
Encourage Curiosity With Calculators It's easy to fall in love with chasing the newest technology to use in the classroom. But sometimes, the perfect tool is a plain old calculator. We'll be using this tool to develop curiosity about math.
