Weisberg (1986) states that creative scientists differ from non-creative scientists in distinct ways. Broadly speaking, creative scientists need to be free of rules to allow for flexible thinking. This flexibility enables them to know when to abandon nonproductive efforts and change approaches. They waste little time on simple solutions and recognise the potential for significant breakthroughs. They may also be aware of a problem or solution that others miss. They are open to experiences, will be alert during investigations and observe things others may fail to notice. Playing with ideas is a key feature of their work. To inspire creativity in carrying out Science Sc 1 (Scientific Enquiry) of the National Curriculum teachers also need to encourage flexible thinking. Is this easier said than done? Of course, but without the effort teachers and children can miss so much they would otherwise gain.