Rote learning, meaningless material, learning without goals, and fatigue can de-motivate students. Motivation comes from intrinsic sources within students, like enjoyment of learning, and extrinsic sources outside students, like rewards. Keller's ARCS model of motivating students includes gaining attention through challenges, relevance through real-world examples, building confidence through feedback, and satisfaction through application. Teachers can also use techniques like silent sitting to improve concentration and creative visualization to develop analytical skills.