1. The pupil prepares his lesson from two or more different books.
2. Different pupils have different books.
3. Aim to bring out difference in point of view or in statement of facts with a view to making pupils think.
d. Outside reading.
1. Other textbooks.
2. Poems and novels.
3. Some references to standard histories and to simpler primary sources.
e. Notebooks.
1. Making and keeping outlines.
2. Reports of outside reading.