| Students profile/age of the student: | 6-12 years old… |
| Climate change topic | Water resources |
| Connected subject in the curriculum | Science |
| Skills and competencies to be developed | critical thinking, content knowledge |
| Terminology, keywords | Changing state, matter |
| Teaching techniques and tools: | brainstorming, case study |
| Methodological recommendations for the implementation | Involve the whole class in the experiment. Every kid loves to investigate and discover. |
| Materials needed: | – 1 ice-cube per each student, – couple of bottle of water |
| Materials offered | Experiment’s instructions |
Activity description, instructions for teachers
Disappearing ice
Check that ice cubes are not so cold that they stick to your hand, then give one to each pupil.
As they hold the ice cube clasped in their hands, discuss these questions:
• How does the ice cube feel? Why?
• Where is the water coming from? How?
• Where will the ice cube go?
• How could you make another ice cube from the water?
This gives pupils opportunities to explore ideas about the change of state from ice to water (and back again), whilst developing their language and discussion ideas.
‘Reappearing’ water
Take a cold dry bottle of water from the fridge.
Leave it in the air until drops of water appear on the outside and discuss these questions:
• Where does the water come from?
• Does this happen outdoors naturally?
This leads into a discussion about the invisible water in the air becoming visible liquid water on the outside of the bottle when the air cools down. This happens when dew (or frost – as ice) forms on the grass on cool mornings or when rain drops grow in clouds in the atmosphere as they become cooler.
| Source: | https://www.earthlearningidea.com/PDF/167_Water_1.pdf |
| Additional Links: | https://www.123rf.com/photo_39488154_wet-ice-cubes-on-blue.html https://twitter.com/ccsprairies/status/866368252699713536 |