After researching European flags last week, we would like the children to have a little bit of fun with them and carry out a scientific experiment on 'afterimages'. They need to read through the information on the 'Stars in your eyes' sheet and carry out the experiments with the green star and the Union Jack. They are then going to use the blank flags template to produce 'alternative' European flags. They need to choose flags which contain only a combination of two or more of the following colours: red, green, blue, yellow, black and white. They will colour in the flags using the opposite colours: red is opposite to green and vice versa; blue and yellow; blue is opposite to green and vice versa; and black is opposite to white and vice versa. They should test the new flags by staring at them for 30 seconds and then looking at a piece of white paper. The proper flag should magically appear!