In the following year the questions should grow more searching. It is best to have these written on the board, especially when time is needed to find the answers. These more difficult questions should require the pupils to think hard. They can be really searching because the answers do not have to be learnt or remembered, as they should be expressed in the text. Alternatively a problem could be presented : this might require information from parts of a long chapter, and of such length that the answers would have to be compiled in note from or summarized in a short paragraph. The discussion at the end would deal profitably with the relevance or necessity of those details that some of the pupils had omitted or included wrongly. If some important facts or arguments had not been found by anyone, the chapter should be read through again, with an instruction such as "There's one point that you have all missed. Try and find it." The pupils themselves should always fill in gaps left in their own work, if there is time, because the responsibility for the completeness of their work must be theirs : it is essential for their growth that they should learn to rely on themselves.