New Riemann Sums applet

26 June 2014

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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Arc length of a spiral around a paraboloid

17 June 2014

paraboloid spiral
What is the length of a spiral around a paraboloid? This is an interesting application of integral calculus, involving an environmentally friendly cooker design.

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From brain injury to math genius: Jason Padgett

17 June 2014

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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Google uses integration to speed up the Web

27 May 2014

The page speed index score is based on calculus
Google tries hard to provide super-fast Web pages, and uses calculus in the process.

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Friday math movie: 5 Quick Math Tricks for Filmmakers

16 May 2014

Film maker math tricks
This short video from Indy Mogul discusses some of the math involved in making videos.

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Friday math movie: Falling in love with primes

2 May 2014

Monster prime numbers
Comedian Adam Spencer gives us the lowdown on finding monster prime numbers.

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Pulleys interactive applet: math background

1 May 2014

Updated pulley math interactive applet
Here’s some math background behind the recently updated pulley applet.

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Range hood curved sides problem

9 April 2014

range hood
A manufactures of range hoods with curved sides wants to know what shape to cut the sheets.

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New z-Table interactive graph

3 February 2014

z-curve interactive
Investigate the meaning of the z-table using this interactive graph.

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Friday math movie: Complex numbers in math class

24 January 2014

Complex number lesson
This is a very creative way to present a lesson – funny, too.

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