Parabolic Pee

Mr. Mark's new little baby can make some amazingly tall streams.  Give your class a little chuckle as you introduce them to parabolic motion with this very short analysis of Mr. Mark's baby's talent.



Solutions for members are below.

Parabolic-pee.doc            Parabolic-pee-solution.pdf

Happy Birthday Statue of Liberty

Friday is the Statue of Liberty's 125th birthday.  Student's can practice scaling with ratios, multiplication factors, or similar figures as they engage in the news of the day, learn a little about the statue's history, see some amazing old photos and even decipher a few Roman numerals.


For members we have solutions and suggested teaching options.

 Liberty’s_125th_birthday.doc            Liberty’s-125th-birthday-solutions.pdf

Approaching Seven Billion people

To see the present world population, go here.

During the Fall 2011 the 7 billionth human on earth was born. The counter mentioned above gives updated approximations of the current world population.  When will we hit 8 billion people?  Students look at the number 7 billion, try to grasp its enormity with some comparisons, check out population, calculate some population density, work again with percents and have some fun thinking about our globe and where we live.


 Below, for members, we have a teaching guide with solutions and suggestions for extentions.

7-billion.doc             7-billion-solution.pdf             7billion-data.xls

Occupy Wall Street protest is growing

The Occupy Wall Street (OWS) movement has grown since it began on September 17th.  Students can look at charts that show percent mentions of the demonstrations and calculate the percentage of media mentions, percentage of comment  growth, and the percentages of American wealth.  Again Twitter was the prime discussion vehicle.


For members we have solutions below.

OWS-protest-growing.doc          OWS-protest-growing-solution.pdf


QR codes ???

Your students have probably seen these images around and might not know why they are becoming popular for smart phone scanning ... and possibly dangerous.  Students figure out the number of permutations of symbols that are possible with these 2-d scanning codes and compare that capability  to the capacity of ordinary UPC barcodes.   This activity might open student's eyes to some of the marketing that surrounds them and help them become aware of some possible dangers … all while engaging in mathematics.



For members we have the solutions for this activity below.

QR_codes.doc          QR_codes-solutions.pdf