This document provides guidance on maximizing the use of chalkboards and overhead projectors in the classroom. It discusses techniques for writing clearly on the chalkboard, such as sharpening chalk and writing at a legible size. It also outlines the advantages of overhead projectors, including their ease of use and ability to control pacing. Tips are provided for effective overhead projection, like facing students while talking and using different techniques like progressive disclosure using overlays. Specific examples are given for how to incorporate these visual aids across different subject areas.