A large clock hand stolen in a student prank has been returned to a university after almost a century. Geoffrey Hunter Baker ...

We’ve seen a variety of oddball 7-segment displays in the past, but this one uses a new material: both for the display and the mechanical mechanism that drives it; cardboard. Yup, the whole ...

Ask the students to find a quarter of a clock face by folding a cardboard clock face. Count how many little lines there are on the clock when the minute hand has moved quarter of the way round.