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Grade 4 Science · World 6: Light Lab · Level 39
Light Travels in Straight Lines
Trace light from a source to an object to your eye.
Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.
What children learn in Level 39
- Light travels in straight lines. That's why you can't see around a corner, and why shadows have the shape of what blocks the light.
- Light can pass through these three cards because their holes are in a perfect line.
- Slide just one card, and the light stops. It can't curve to find the next hole.
- How do we see? Light goes from a source to a thing, bounces off, and travels to our eyes. Eyes take light in. They don't send it out.
- A light source makes its own light, like the sun or a flashlight. The moon doesn't. It shines because it reflects sunlight.
Georgia Standards of Excellence in Science:
- S4P1.b — Plan and carry out investigations to describe the path light travels from a light source to a mirror and how it is reflected by the mirror using different angles.