1. I will give a brief introduction to Perimeter Institute and its science education and outreach activities.

2. Statements of the form: "Idea/concept X is true, but it is beyond the scope of this text to explain why", appear all too often in high school physics texts. If a full justification of an idea or concept cannot be made, every effort should be made to present at least a plausibility argument. A good example is E=mc^2, which is often stated without any real justification. I will present a simple thought experiment (close to the one originally used by Einstein) that motivates this equation.

3. Many presentations of quantum theory to high school students miss the two main points of the theory:

(a) Why, precisely and concisely, does classical physics completely fail to describe nature at a fundamental level? The answer is related, in part, to the Heisenberg uncertainty principle, which is usually left to the end of the unit and thus often either missed entirely or covered with insufficient emphasis.

(b) What is the main new idea that makes quantum theory fundamentally different from classical theory? (Answer: superposition of states.) I will outline how both points can be presented very easily and clearly through a careful consideration of the double slit experiment using electrons, which also effectively imparts the deeply bizarre and mysterious nature of the universe we live in.

(30 minutes)