If you want to know what time it is, you’ll have to do a little work with this clock. Meet Albert, a wall clock for children that breaks down the current time into math problems. Named after ...

Ostensibly the clock was designed for children to learn math in a fun and engaging way, but don’t let that stop you adults from getting enjoyment out of it yourself.

Write and tell time on analog and digital clocks.

Of course, you’ll need to do a bit of math in order to get the time of day from this alarm clock. To read the hour, you add up the values of the red and blue squares.

The Albert Clock is an ingenious wall clock that uses math problems to tell owners what time it is.

This analog clock has a twist: the only number appearing on the clock face is nine, but it's calibrated correctly once you do the math.