Last night I saw an interesting programme on television. It was about a new way of teaching science subjects to school children. For three years now a school in London (teach) science in this way to some of its students, and these students (do) significantly better in examinations than the students in ordinary classes. It (work) like this: students (not only learn) about science, but are taught to think about the way of thinking. One of the teachers on the programme said, older good teaching methods make people think, but it (be) in sense unconscious. When a child (have) to explain to somebody else how they have solved a problem, that really makes them think about their own thinking. Researchers (not fully understand) how the methods work. But marks in examinations have increased dramatically. Unfortunately nothing is being done at the moment to train other teachers the new methods.