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In this updated activity, students will explore parametric equations to graph a heart shape using sine and cosine functions. Begin with the starter activity to set the stage (o...
Image by kjpargeter on Freepik
It's a gorgeous ball, covered with Waterford Crystal triangles, shaped as a geodesic icosahedron. Every New Year's Eve it descends in Times Square to ...
An Einstein aperiodic tile has just been discovered. Find out what that means and why it is significant. Plus - play with the tiles. Do you want to tile your shower floor wi...
For Valentine's Day, bake a cake!
Students calculate base area or volume of cakes made from 2 cake pan sizes and observe how the volume of the cake changes with the increased pan size. &nbs...
As a snowflake falls from the sky, its crystal grows according to the humidity and temperatures of the air that it passes through.
In this activity, students interpret a graphic that clarifies ...
Flag of the United States from 1777 to 1795.
In honor of Independence Day we thought it would be fun to look at one story about the first American Flag.
The rough desig...
Here's a different and somewhat artistic way to encourage understanding of a conic section. Participants physically build an ellipse by choosing two foci and sketching the fi...
If you have a set of cubes for your classroom, this would make a great group hands-on project. Its an old puzzle but the activity deserves a revisit.
Below are two straight-on images of my ...
Can you see the many spirals in this design?
Students calculate the size of each increasing round of squares and consider what sort of spirals these must be.
Working wit...