First Grade · Science · week 13

Clear, foggy, or blocked?

Sort materials by how much light passes through: clear, foggy, or fully blocked.

Light can pass through some materials and not others. Materials you can see clearly through, like clean glass or clear plastic wrap, let light straight through. Materials that let some light through but look blurry, like wax paper, only let some light pass.

Materials that block light completely, like wood or cardboard, let no light through at all -- that is why they cast a strong, dark shadow.

📋 For the teacher
Teach it (10–15 min):
  • Gather a small pile of test materials together first: plastic wrap, paper, wax paper, cardboard, a book, a drinking glass.
  • Test each one with a flashlight in a dim room so the light difference is easy to see.
  • Use everyday words first, such as clear, foggy, and blocked; formal science terms can come later if your child is ready.
  • Ask "why do you think that one blocked the light?" for at least one item to build reasoning, not just sorting.
Talk about it:
  • Which material let light through the clearest?
  • Which material blocked all the light?
  • Can you find one more object at home and guess which group it belongs to before testing?

Mastery looks like: They correctly sort several real materials by how much light passes through: clear, foggy, or fully blocked.

Common stumbles: Confusing "shiny" with "lets light through," since a shiny but solid object still blocks light; not holding the material close enough to the flashlight to test fairly.

Homework for this lessonType it, write it with a stylus, or print it for pencil & paper.open →
Records attendance + 15 min of Science for this learner.
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