Aim:
To observe, touch, and compare the physical properties of PVC, wood, and metal to decide which material is best for making a lamp body.

Materials Needed

• Small pieces of PVC pipe, wood, and metal (handled with teacher supervision)

• Marker

• Sandpaper

• Notebook or worksheet

• Table for observations

Steps

1. Observation Round:
   Place the three materials (PVC, wood, metal) on your desk. Observe their color, surface texture, and weight.

2. Touch and Feel:

   • Hold each piece.

   • Try to bend gently (without breaking).

   • Note which one feels lightest and which one is heaviest.

3. Tap Test:

   • Lightly tap each material on the desk.

   • Listen to the sound — which one makes a soft sound and which makes a metallic “ting”?

4. Scratch and Smooth Test:

   • Rub each material lightly with sandpaper.

   • Notice how easily it gets smooth or scratched.

   • Observe whether dust or rust appears.

5. Water Test (Optional Demo by Teacher):

   • Place each material near a few drops of water (not soak).

   • Observe: Does it absorb water or stay dry?

6. Record Observations:
   Use a chart like this: