May 2013: Fibonacci, Clocks, Math Junkies, Marathons, and Area Code

(From May 31, 2013)

"Area Code"

Find the weekly math comic at mathplane.com



(from May 24, 2013)

"Ultra-Marathon"

Red e, Set, Go!!



(from May 17, 2013)

"Doing Lines"

Math Junkies, just say know!


Check out Diagonals and Polygons in the spare parts section at mathplane.com






(from May 10, 2013)

Now, it's time for 3 clock angle questions!

1) What is the measure of the angle formed by the hands of a clock at 5:00?
2) What is the measure of the angle formed by the hands of a clock at 7:12?
3) Challenge:  If it is 12:02, when is the next time the minute hand will cross the hour hand?  (round your answer to the nearest second)..
(Note: the answer is not 1:05:00)

SOLUTIONS are here...





(from May 8, 2013)

"Fibonacci Day"

Next Wednesday is 5-8-13, a "Fibonacci Day" --- (assuming such a thing exists)... In honor of Leonardo of Pisa --- Fibonacci, the Mathplane weekly cartoon features his
sequences.....



How familiar are you with sequences?
Answer the following:
Assume 3 and 9 begin each sequence. What is the 3rd term in each:
a) Arithmetic sequence: 3, 9, ? ...
b) Geometric sequence: 3, 9, ? ...
c) Fibonacci sequence: 3, 9, ? ...

SOLUTIONS are here...

And, learn more about Sequences and Series.....