Examples of tackling subjects and concepts that pupils find difficult to understand are explained in this video suitable for Key Stage 2 and upwards.
Students at the President Kennedy School in Coventry, consider the sinking of the Argentine cruiser The Belgrano during the Falklands conflict.
The issues surrounding exclusion zones, peace plans and official secrets are slowly unfolded, giving students different source information.
After absorbing the evidence, they swap information with one other student and then with two more, giving them a clearer picture of the facts and arguments.
Later, Philippa Cordingley, director of the Centre for the Use of Research and Evidence in Education explains the use of this strategy supported by the research in this video.