Geometry

Storm cleanup

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…

Throwing up again

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…

Valentine’s Cardioid

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.

Largest Cup of Coffee Ever!

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…

Why Does it Stay in Orbit?

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…

Benoît Mandelbrot

        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…

Geometry of Flooding

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…