Month in Review – August 2012

It’s the end of the month once again, so here’s the post list for the Month in Review,  August 2012 edition.

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PEMDAS and the Common Errors in the Order of Operations

PEMDAS is the acronym for the order of operations. P stands for parentheses, E for exponent, and MDAS for Mulitplication, Division, Addition, and Subtraction respectively.


This means we want to evaluate a numerical expression such as

5(6 + 3)^2 - 8

we have to ‘operate’ to the order of PEMDAS. The operation is as follows. » Read more

Watch Exceptional Fast-Paced Math Videos at Vi Hart

In addition to the list of more than 5000 free mathematics and physics videos  and tutorials I shared  last year, you may want to add the Vi Hart‘s Math Channel in Youtube. Vi Hart has created recreational math videos and mathematical doodles in fast-paced narration. The  channel has more than 200,000 subscribers and has been viewed more than 16 million times as of this writing.

The math video above is the part 1 of 3 of the Fibonacci sequence and Spirals series.

Vi Hart calls herself a recreational mathemusician. She was born Victoria Hart, a music major who is passionate about mathematics. She is currently working at the Khan Academy but continues to maintain her own  video blog.

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