World of Tan 11 - The Past, Present and Future
Can you fit the tangram pieces into the outlines of the telescope and microscope?
Can you fit the tangram pieces into the outlines of the telescope and microscope?
Start with three pairs of socks. Now mix them up so that no mismatched pair is the same as another mismatched pair. Is there more than one way to do it?
Two engines, at opposite ends of a single track railway line, set off towards one another just as a fly, sitting on the front of one of the engines, sets off flying along the railway line...
In this 100 square, what is the sum of the numbers that are diagonally opposite each other?
Are these statements relating to odd and even numbers always, sometimes or never true?
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 find out!
Starting with one of the mini-challenges, how many of the other mini-challenges will you invent for yourself?