Glass-Wall Clock Mathematic. What time is it? If you are good at math you know what time it is, but if you did well,find the time cost.
For the geek, for the more ready, here's the clock that must be present in yourroom or in your office, the clock mathematics.
Guess the time using mathematical formulas.
Made of glass.
Math glass-wall clock measures: 34 cm in diameter.
