Archive for the ‘Learning’ Category

New Riemann Sums applet

applet for finding area under curve
Here’s some background on the new Riemann Sums applet I added to IntMath. You can see how we find areas under curves using rectangles.

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From brain injury to math genius: Jason Padgett

Padgett image
Jason Padgett was attacked and savagely beaten. He had severe concussion, but an amazing new ability to “see the world through the lens of geometry”.

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When does log(x-3) = log x – log 3?

intersecting log curves
A recent comment from a Twitter colleague got me thinking about the value of graphical solutions of equations.

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Friday math movie: Smart failure for a fast-changing world

Smart failure
We don’t deal with failure properly in most educational settings. This talk gives some options for improving that.

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Updated matrix interactive

Matrices interactive applet
Here’s an applet where you can investigate how matrix operations work.

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Friday math movie: A clever way to estimate enormous numbers

Making estimates using powers of 10This video shows how to use powers of 10 to make estimates of large numbers.

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Review: Dr. Geo

Dr Geo
Dr Geo is a free download that allows us to construct a wide variety of geometric objects.

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Trig ratios: updated interactive

Investigate trigonometric ratios
Here’s an interactive graph where you can investigate some important trigonometric identities.

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MathGraph32

MathGraph32
MathGraph32 is a great free tool for exploring 2D and 3D math concepts.

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Friday math movie: Donald in Mathmagic Land

Donald in Mathmagic Land
This is a classic late-1950s cartoon where Donald learns where math comes from.

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