Use this in class as part of your topic on 2d and 3d shapes. Children should work in groups of 4
1 person choose the shape
The other three could ask yes/no questions and marked on the sheet which shape it could be.
A point for the person who correctly worked out which shape it was.
To stop them guessing they had to narrow it down on their sheet until they only had one shape remaining. They also wrote down all the questions that were asked and the responses.
They enjoyed it thoroughly and it made them think very carefully about the properties of 2d shapes. It develops their visualisation skills, thinking skills, questioning skills and they had fun learning about 2d shapes!!!
I'm a deputy head in Scarborough, England and love using media and tech to develop writing. I'm also a keen advocate of Learning Without Limits and believe in a games based approach to developing mathematicians.