The document provides tips for maximizing the use of chalkboards and overhead projectors in classroom instruction. It notes that while new technologies have been introduced, many schools still lack resources and teachers have not been trained to use available equipment. As such, the chalkboard and overhead projector, which are available in most classrooms, remain important teaching tools. The document offers advice on writing clearly on the chalkboard, avoiding overcrowding notes, maintaining eye contact with students, using transparencies and pointers to direct attention, and adding details during projection. It emphasizes that learning to properly use basic classroom equipment in an inexpensive way can help teachers achieve instructional objectives and promote visual and lasting learning.