I like the way in which keywords are explained. This is especially useful for students seeking extension material who may not have covered the information in such detail before.
The activity is split into six different topics. In each children are asked questions on which they will receive feedback. Correct answers are rewarded with part of a picture being revealed. If all six questions are answered correctly, a bonus question appears.
The activity can be used by children working on their own, in groups or as a whole class. Group work will encourage discussion of the questions and introduction of related ideas.