Larsen introduces an educational puzzle for children learning to read the time. There are 42 pieces with an analog clock face on each, while the puzzle frame has a digital clock and written sentence on it. The pieces can only be place by the correct time, so the puzzle is self-correcting and gives immediate feedback. The digital clock is shown both in 12-hour and 24-hour convention. A wide variety of different times are used to cover as many different clock aspects as possible and shows full hours, half hours, 25 minutes, 20 minutes, quarter hours, 10 minutes and 5 minutes.