The Physics 2 Tutor: Learning by Example DVD series covers thermodynamics, oscillations & waves in physics through step-by-step example problems. Emphasis is placed on giving students confidence in their skills by gradual repetition so that the skills learned are committed to long term memory. Lessons cover latent heat and phase change in physics, including how adding or taking away energy from an object can cause it to change state between solid, liquid, and gas. Grades 9-12. 35 minutes on DVD.