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Curriculum Organizing Questions
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- What would you predict would happen to light
interacting with this material?
- How might you explain why light interacts with this
material in this way?
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Elaboration
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Experimentation with a variety of light sources, lenses,
and mirrors provides experience for both qualitative and
quantitative descriptions.
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Specific Ideas
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- Light waves superimpose, bend, reflect or are
absorbed depending on their wavelengths.Benchmarks
4F6.
- Light slows down when it enters a denser
medium.Science Matters p. 106.
- Waves move at different speeds in different
materials.Science Matters p. 107.
- Light interacts with matter by transmission
(including refraction), absorption, or scattering
(including reflection). Science Matters p. 107.
- A mirror reflects light by scattering it.Science
Matters p.107.
- Lenses refract light by transmission.Science Matters
p. 106.
- Angle of incidence (light
coming into the surface) = angle of reflection.Science
Matters p. 107.
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Developmental & Instructional
Implications
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Children often hold a considerable number of
misconceptions about light that may affect instruction.
Driver et al offer a detailed discussion of children's
difficulties with the ideas associated with light on pages
128-132.
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Examples
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