1. Air Has Weight
Concept: Air exerts pressure
Materials: Balloons, stick
Activity: Blow one balloon, keep the other empty, tie both ends to a stick. The side with the inflated balloon goes down, showing air has weight.
2. Water Purification Experiment
Concept: Sedimentation & filtration
Materials: Sand, gravel, cotton, bottle
Activity: Make a simple filter and pour dirty water through it to observe purification layers.
3. Solubility Test
Concept: Soluble and insoluble substances
Materials: Salt, sugar, sand, oil, water
Activity: Mix different substances in water and note what dissolves.
4. Magnet Attraction
Concept: Magnetic and non-magnetic materials
Materials: Magnet, paper clips, coins, plastic items
Activity: Test which objects a magnet attracts.
5. Make a Simple Circuit
Concept: Electrical circuits
Materials: Battery, bulb, wires
Activity: Connect wires to a bulb and battery to make it glow.
6. Photosynthesis Demonstration
Concept: Plants make food
Materials: A potted plant and sunlight
Activity: Keep one leaf covered with foil, leave another uncovered. Test for starch after a day — only the uncovered leaf shows starch.
7. Water Capillarity
Concept: Water travels upward in plants
Materials: White flower or celery, colored water
Activity: Place the stem in colored water. The color moves up, showing capillary action.
8. Shadow Formation
Concept: Light travels in straight lines
Materials: Torch, objects
Activity: Shine a torch on objects to form shadows and observe changes in size.
9. Rusting of Iron
Concept: Rusting requires air + moisture
Materials: Iron nail, water
Activity: Keep one nail dry, another in water. The wet nail rusts.
10. Types of Changes
Concept: Physical & chemical changes
Materials: Ice, paper, vinegar + baking soda
Activity: Compare melting ice (physical) vs fizz from vinegar+baking soda (chemical).
11. Separation by Hand Picking
Concept: Separation of mixtures
Materials: Stones + rice
Activity: Show how undesirable materials are removed manually.
12. Floating & Sinking
Concept: Buoyancy
Materials: Water bucket, wood, stone, plastic ball
Activity: Compare which objects float and which sink.
13. Soil Absorption Test
Concept: Soil properties
Materials: Sand, clay, garden soil
Activity: Pour equal water amounts and observe absorption speeds.
14. Friction Experiment
Concept: Friction
Materials: A toy car, various surfaces
Activity: Roll the car on carpet, tile, wood. Measure which surface slows it down most.
15. Condensation Experiment
Concept: Water cycle
Materials: Ice, metal plate
Activity: Hold a cold plate above warm water — droplets form due to condensation.
16. Air Needs Space
Concept: Air occupies space
Materials: Glass, bowl of water
Activity: Invert an empty glass into water. Water doesn’t enter immediately because air occupies the space inside.
17. Transparent, Translucent, Opaque Objects
Concept: Light properties
Materials: Paper, glass, metal plate
Activity: Shine a torch to classify objects based on light passing through.
18. Seed Germination
Concept: Conditions for growth
Materials: Cotton, seeds (moong or beans), water
Activity: Keep seeds on moist cotton; observe germination over days.
19. Expansion of Air
Concept: Air expands on heating
Materials: Bottle, balloon, hot water
Activity: Place a balloon over the bottle mouth; warm the bottle. The balloon inflates.
20. Making Compost
Concept: Biodegradable waste
Materials: Leaves, vegetable waste, soil
Activity: Mix biodegradable waste with soil and observe decomposition over days.