Plan to alternate activity with inactivity. Always face the students when you speak to them. Try using an overhead projector instead of a blackboard so that you don't have to turn your back on the class. Underline key words in the directions for handouts and workbook activities. Always say and write instructions for activities.
Many students have problems comprehending one method or the other.
When writing tests, intersperse easier questions throughout. This helps keep the motivational level high. Contact parents to give them good news in order to build a supportive relationship with them.