by MathPickle | Sep 14, 2015 |
Make three equally spaced notches along the four sides of a square. Choose one of these three notches on each side. Connect them up to form a simple quadrilateral. For example, here we have chosen the middle notch on each side. What is the area of this...
by MathPickle | Sep 14, 2015 |
Start by drawing a point on a cartesian grid. The position of the point has been selected carefully. The student at the back right of the class begins. They know nothing. They may either take a guess at what will happen next – or may ask for the next slide....
by MathPickle | Sep 12, 2015 |
Ruffian Ritual Not everyone is nice. Not everyone even pretends to be nice, but their is still honour and protocol among thieves. Let's say that you're spying on a den of thieves and ruffians. The first thing you notice when they get together is that they all...
by MathPickle | Sep 12, 2015 |
Kobon Triangles (Kobon Fujimura, 1981) Math Puzzles do not get more beautiful than this one from Japan. It should be used by either elementary instructors who need to give their students practice holding a ruler and drawing a straight line or by junior high...
by MathPickle | Sep 11, 2015 |
Venn diagrams are not taught well anywhere. With little effort, these diagrams can be brought to life with beauty and by going beyond that little 3 circle Venn diagram. At the very least a teacher should end a lesson on the three circle Venn diagram with a question:...
