The document discusses five variables that influence student motivation - interest, success, level of concern, feeling tone, and knowledge of results - and provides techniques teachers can use to enhance each one, such as using visual aids to build interest, ensuring assignments are at appropriate difficulty levels to promote success, and providing timely feedback to give knowledge of results. It emphasizes the importance of creating a positive feeling tone in the classroom and using extrinsic motivators strategically to help students develop intrinsic motivation.