The Coloring Problem How few colors can you use to fill in a map so that no neighboring regions are the same color?
Thinking Like Equivalent Fractions Go across disciplines by asking students to write a story about fraction equivalence.
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?
Olympic Medal Math Project In the paper, I read about Norway's dominance of the Winter Olympics, despite being a tiny country. I love this juxtaposition of unexpected data! Let's turn it into a math project. Here are some questions I thought of…
Healthy Donuts!? Framing a Math Project with a Big Idea Instead of jumping straight to calculations, what if we framed this math concept with a big idea?
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.
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.
Updating Old Questions: Addition With Missing Pieces How can I go beyond asking 20 variations of 622 + 77 = ___?
Could we fit 1,000 kids on the playground? 10,000? If your students can find the area of a square then, armed with Google Earth, they can also figure out how many students you could pack into your school's playground.
Fizz Buzz – A Divisibility Game Here's a quick to learn but difficult to master math game. Start with some basic divisibility rules, but then feel free to extend it to any math topic.
