Here's a chance to work with large numbers...
My measurements have got all jumbled up! Swap them around and see
if you can find a combination where every measurement is valid.
In the ancient city of Atlantis a solid rectangular object called a
Zin was built in honour of the goddess Tina. Your task is to
determine on which day of the week the obelisk was completed.
Can you explain what is happening and account for the values being
My average speed for a journey was 50 mph, my return average speed
of 70 mph. Why wasn't my average speed for the round trip 60mph ?
An environment that simulates a protractor carrying a right- angled
triangle of unit hypotenuse.
A conveyor belt, with tins placed at regular intervals, is moving
at a steady rate towards a labelling machine. A gerbil starts from
the beginning of the belt and jumps from tin to tin.
Swimmers in opposite directions cross at 20m and at 30m from each
end of a swimming pool. How long is the pool ?
We had a lot of interest in this problem and over 200 correct
Go to last month's problems to see more solutions.
Noticing the regular movement of the Sun and the stars has led to a desire to measure time. This article for teachers and learners looks at the history of man's need to measure things.
Two sudokus in one. Challenge yourself to make the necessary