understanding of those key concepts. This might require three different websites. The demonstration must be approved by the teacher and be presented to future students, by a physical demonstration, a short video. or a series of photographs, or a computer simulation, or a series of sketches, or some other suitable format. It should take between 5-10 minutes to present. The short write-up accompanying your visual representation must include: Purpose: What is the demonstration designed to demonstrate? Materials: Include a list and a diagram. Procedure: Outline the steps followed when doing the demonstration. Observations: Tell what the observation should be. (e.g., for the "broken pencil" demonstration: You should notice that the pencil appears to be displaced at the point at which it enters the water.) Analysis: This is the important section where you clearly explain the phenomenon observed. Show your understanding and enable others to understand. Reference: State where the idea for the demonstration came from. It is perfectly acceptable to use a demonstration that you have read about, but you must put the information and explanation in your own words