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This video is a great treatment of math for multiple intelligences – visual, musical and interpersonal.

Diagrams should make things easier to understand, but often they don’t. How can we fix this?

This video commemorates World Metrology Day, 20th May. Go metric and make your lives simpler!

In this Newsletter:

1. Math tip: Finding a quadratic function from its graph
2. IntMath Poll: What stresses you?
3. Resource: Flat World Knowledge
4. Math tip: Understanding math formulas
5. Is there a place for invention in math?
6. Friday math movies
7. Final thought: perseverance

A reader asked how to find the equation of a parabola from its graph.

The developer of Wolfram|Alpha shares his views on improvements to the normal search engine.

Little kids invent things all the time. Should we let them (and their older siblings) invent math?

Now here’s an interesting way to think of Euclidean geometry (points, lines and triangles).

In this Newsletter:

1. Resource: Top 10 math help sites
2. Which is the correct graph of arccot x?
3. Math tip: Learning math formulas
4. Friday math movie: OK Go This Too Shall Pass
5. Math resource: NSDL
6. Final thought: capabilities

Math text books and math software disagree on the correct graph of arccot(x). Which one is right?