Love math and always boast to the rest of your mates on just how fast your mind is? The Pop Quiz Math Clock ought to stop you in your tracks for a while as you wonder what time it is, until you realize that those formulas can always be substituted by the traditional numbers on any wall clock. Measuring 11.5″ in diameter, the Pop Quiz Math Clock is powered by a solitary AA battery and will retail for $29.99.

# Pop Quiz Math Clock

by
edwin
- on June 23rd, 2009

the equations for times 2, 7, and 8 are all ambiguous.

sqrt(4) = + or – 2

sqrt(64) = + or – 8

and the equation for 7 could be 7 or it could be -6

if the clock wasn’t designed for math nerds, i wouldn’t point it out