Teach Engineering
Light Intensity Lab
Let there be light. The last installment of a seven-part series has pupils conduct an experiment on light attenuation through different numbers of transparency sheets. They then relate the results back to how X-rays measure bone density.
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Science Spot: Identifying Unsafe Lab Practices [Pdf]
Students will read a story about the way in which a lab is conducted. They are asked to identify unsafe lab techniques mentioned in the story.