Math Clocks
 
Note: Clicking
on a picture of a clock  
The Math Clock – Student Edition & Engineers Edition 

Particularly well suited for engineers and high schoolers. 

The Math Clock – Professional Edition 

For professional
mathematicians, math aficionados, or mathematically inclined college students. 
The Math Clock – Radian Edition 

Prerequisite  a course in Algebra 2 or Unit Circle Trigonometry!  
The Math Clock – Radian Edition – Version Tau 

Especially
for τ aficionados. 

The Math Clock – Prime Edition 

Recommended for grades 4 to 8, especially for upper elementary or middle school classrooms.  
The Math Clock – Primorial Edition 

Recommended for graduate student or professional number theorists . 
The Math Clock
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Another perfect clock for number theorists or general number aficionados. 
The Math Clock
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Our most advanced clock, especially appealing to π aficionados.  
The Math Clock
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For set aficionados and mathematics classrooms.  
The Math Clock
– 

Since this clock involves formulas,
it is appropriate for ages T_{4} to S_{10}, like the Fibonacci Formula clock. 

The Math Clock
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Appropriate for ages 1x2x3 to123. 

The Math Clock
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For fundamental number theorists, theoretical computer scientists, and metamathematicians.  
The Math Clock – Fibonacci Sequence 

Appropriate for ages 8 to 89, especially for Fibonacci aficionados. 

The Math Clock – Fibonacci Formula 

Appropriate for ages 10 to 100. 
The Math Clock – Binary Edition 

For computer geeks of ages 1010_{2} to 1100100_{2}. 

The Math Clock – Hex Edition 
This is the same as the previous clock (despite the poor photo qualty) except that it uses base 16 instead of base 2, with a typical computer programming language notation for hexadecimal numbers, and it has a barely visible black second hand. 
For computer geeks of ages 0xA to 0x64. 
The Rubik's Clock  Solution Edition 
As the hours go from one to twelve, the cube gets solved in 11 stages, each of which involves just one or two turns. The steps' instructions are printed lightly on the clock face's inner circle in a standard code, which is explained in detail on the back of the clock. The images and instructions are from Tom Davis. 
For Rubik's Cube aficionados who care about time. 

The Rubik's Clock
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This is the same as the previous clock except that it goes in the other direction  from a solved cube to the mountain "peak" design, with the accompanying instructions reversed, of course. Apparently some people who can solve the cube like to spend time creating designs rather than just speed up their solving time. 
For artistic Rubik's Cube aficionados. 

The Math Clock – Metric Edition 
A great gift for people who are constantly trying to promote the metric system in the US. While we support their hopeless cause, at least for distance and mass, 12 and 60 are far better choices for dividing time into, because they are both abundant and superior highly composite numbers. Decidays are indicated with thick ticks marks, and centidays with thin tick marks, around the outer edge. Since the clock movement is not metric, on most decidays, the centiday hand will not be pointing straight up – 5 o'clock and 10 o'clock are beautiful exceptions. On the other hand, that means this clock is still useful for people old enough to tell time from the hands' angles. No second hand is included, since it could be disconcerting to hear a tick every 23 microdays. 
For metric proponents of ages 10 to 100. 

_ _ _ _ _ This is the dividing line between the math clocks and the nonmath clocks, _ _ _ _ _ although we admit that there's some mathematical flavor in virtually all of our clocks. 

Corona Time 

For anyone who doesn't have an "essential" job.  
The Chemistry Clock 

Appropriate for ages 10 to 100,
and science classrooms. 
TTime – 

Intended for the medical offices of general or spinal orthopedic surgeons and chiropractors.  
The Dental Clock 

Intended for the medical offices of general dentists, orthodontists or oral surgeons. 
The Music Clock 

For musicians of all type and especially for composers and music teachers. 
The 

Appropriate for weights of 100
to 300. 
The 

Appropriate for ages 5 to 500, and Hebrew school classrooms. 

The 

Appropriate for ages 500 to 5.  
The 

For aficionados of India and/or
history of science. 

The 

For special people on special occasions. 

Prices: All 10" clocks cost $40 except for the following:
Shipping Click here for new, fairer shipping cost tables
Buying a Gift? Mathematical wrapping paper is $4. Can't Decide Which
Clock to Buy? Cute gift certificates are also available.  
 
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