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?
We received a lot of responses to this
problem - thank you to everyone who got in touch. Abdurraheem from
Malmesbury Primary said:
You have thought very logically here,
Abdurraheem. Well done.
Many of you drew the route that the bird
takes, which is a very efficient way of solving the problem.
Someone who didn't give their name or school sent in this image
which is very helpful:
Christina, Amy and Keira from Dr Challenor's
High School did the same thing and explained their reasoning:
Joshua and James from Thornton Dale C of E
Primary School used a similar method but they decided to draw the
route to scale rather than sketch it. They describe
what they did:
Daniel from Mount Pleasant Junior School
described what he did very succinctly:
Children from the Challenge Club at Pipers
Corner School wrote to say:
Well done! I guess the
problem didn't actually ask for the shortest
way back so you're right, the bird could
have gone back the way it came. In fact, there could,
therefore, be many, many other solutions!