Leaf Bag Makes Water
Water droplets collect inside the bag.
Teaching & key ideas
What you do: Show bag tied around leaves for an hour or more.
What students see: Water droplets collect inside the bag.
Why it works: Plants release water vapor through leaves; it condenses on the bag.
Question to ask: Where did the water come from?
Lesson flow
Predict → demonstrate → observe → briefly explain → ask: Where did the water come from?