Which times on a digital clock have a line of symmetry? Which look
the same upside-down? You might like to try this investigation and
This investigation explores using different shapes as the hands of
the clock. What things occur as the the hands move.
Do you know the rhyme about ten green bottles hanging on a wall? If
the first bottle fell at ten past five and the others fell down at
5 minute intervals, what time would the last bottle fall down?
This problem needed a great deal of
logical thinking. Excellent solutions were sent in by Zartasha from
St Mary's C of E High School, Bryan from The British School of
Guangzhou, Aporva from Brackensdale Junior and James B, James H,
Jack W and Jack H from Tunbury Primary School. Remember that we
like to hear the reasons for your answers, not just the
The group of boys from Tunbury
Bryan from The British School of Guangzhou
also sent in a clearly-reasoned solution for Julie's clock:
Well done all of you!