Notice & predict
Two sides, two guesses
Sketch two sides and predict distance change.
Curiosity Bundle
Why Am I Upside Down in a Spoon?
The two sides of one spoon can show very different faces.
Compare the inward and outward curves in room light. Follow the surprise into curved mirrors, then find out why crumpled foil reflects without showing a tidy picture.
IgniteWhich side turns you over?
Offer one puzzle and leave room for a first idea.
Offer one puzzle. Leave room for a guess.
Hold a shiny spoon at a comfortable distance in room light. Ask, "What changes when you turn it over? Did you move, or did your image change?"
Another way to begin
Show smooth foil and a crumpled piece. Ask, "Both shine. Will both show the same picture of your hand?"
Use ordinary room light with curtains closed against direct sunlight. No flashlight is needed.
KindleTwo sides, two guesses
Look, guess and sketch before reading. Keep the first version.
ReadFollow light a little further
Both readings are part of the exploration. Read together or across short sittings.
DoChange one thing and compare
Try both investigations when conditions allow. Record surprising or missing results honestly.
CheckReturn to your first idea
Revisit both readings and the evidence. Parent answers support a conversation.
A light check
What would you change now?
Revisit curves distance and foil.
Sources and review notes
Local review edition. Physical activities, diagrams, and family usability still need review. Times are estimates. See the parent guide for each activity’s safety instructions and model limits.
- Spoon ImagesConcave and convex spoon sides; formulas omitted and near-eye trials excluded.
- Reflection from MirrorsAdditional source disclosed; concave image changes with object distance and convex upright image.
- ReflectionsAdditional source disclosed; household reflective comparisons and foil; no sunlight focusing.
- Physics Demonstration 087Additional source disclosed; crumpled foil reflection only; lasers and specialist equipment excluded.