Playlist: Bookmarks
Drawing An Impossible Triangle
Here’s how you can draw The Penrose Triangle, an example of an impossible shape.
Drawing Knots, Level 3
How to draw the final version of the twisty Henri Matisse knot!
Drawing Knots, Level 2
How to draw a more complex version of this twisty Henri Matisse knot!
Drawing Knots, Level 1
How to draw a simple version of this twisty Henri Matisse knot!
Create Your Own Operation
The commutative and associative properties are a whole lot more interesting when you apply them to a mathematical operation that you created!
Disneyland Parking Structure Math Project
Your students will use estimation strategies to figure out how many parking spots are there in the parking structure at Disneyland? And you bet I reveal the real answer!
Place Value (Beyond Base 10)
Place value is something we cover in elementary school. It seems simple, but I’d wager that very few adults really understand the topic. I sure didn’t until I worked with non-base-10 number systems in college. Your students can get a taste of this mind-boggling experience by imagining what it would be like if we didn’t have the number 9. What would each digit represent then?