Whoa! I have two fish in my aquarium. Betty, my white goldfish always stays really close to the front wall as she swims towards her food. However, Stripe, my striped goldfish swims diagonally across the tank to the back top…

Use this activity to help your students discover the Pythagorean theorem. Pythagorean theorem work is often skill and drill work with contrived right triangle problems. In this activity students work with a visual representation of the Pythagorean theorem in order…

We can’t get enough NFL. Check out the video above that revisits a truly great NFL playoff play. In the 2005 AFC divisional championship game between the New England Patriots and the Denver Broncos, Benjamin Watson stopped a touchdown in…

This activity could be used as an introduction to trig ratios. Students figure out the approximate length of the huge branch that I have to fell for safety and firewood. After approximating the branch’s length, they calculate how many logs…

Anchorage, Alaska has received more than 100 inches of snow this winter. The height of the tunnel to people’s homes is getting higher and higher. When they shovel an area, they have to throw the snow practically straight up from…

WojciechSwiderski at the Polish language Wikipedia Happy Valentine’s Day! cardioid.pdf This PDF contains four ways students can draw cardioids for Valentine’s Day.

The world record for the largest cup of coffee was recently set (see picture above). In this activity students explore scale, similar figures, volume and measurement as they estimate the amount of coffee that this record-sized mug holds. Students also…

On Monday, the space shuttle Endeavor launched for the last time. The six astronauts on board docked this morning at the International Space Station to join the 6 astronauts and cosmonauts who live at the ISS. Combine current events, Earth…

In October, 2010, Benoît Mandelbrot died in Cambridge, Massachusetts. To honor his life and work in fractals and natural recurrence, we’ve created an investigation that teaches students a little about Mandelbrot’s life, a little about the…

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…