PSc.3.1 Understand the types of energy, conservation of energy and energy transfer.
PSc.3.1.1 Explain thermal energy and its transfer.
PSc.3.1.2 Explain the law of conservation of energy in a mechanical system in terms of kinetic energy, potential energy and heat.
PSc.3.1.3 Explain work in terms of the relationship among the applied force to an object, the resulting displacement of the object and the energy transferred to an object.
PSc.3.1.4 Explain the relationship among work, power and simple machines both qualitatively and quantitatively.

No. 9 Energy
No. 10 Conservation of Energy
No. 11 Simple Machines

Video: Energy Pie Charts
Video: Conservation of Energy: Rollercoaster

Videos on Simple Machines & Mechanical Advantage:
Inclined Plane
Wedges & Screws
Wheel & Axle

Video: Rube Goldberg Musical Instrument
Sim: Rollercoaster Park