Science: Conductivity grade 6-8

STEM Education
Science Grade 6-8
Conductivity & Electrical Circuit

Objective: To explore different materials, their conductivity & Resistance.

Tools/Teaching Materials: A wooden box 3 inches-6 inches. 1 switch. 1 battery. 2 wires. 1 socket and 1 light bulb. different materials. 1 matchstick, 1 leaf, tissue, 1 bottle cap.

Introduction: First of all, remind the students about electricity and its hazards. Always take safety precautions before performing any energy related tasks. Give a brief introduction about electricity and how current flows through a circuit.




Explanation: Ask the students about conductivity and resistivity, check their responses and Tell the students that,
  • The ability of any material to conduct electricity is called it's electrical conductivity.
  • Make at least 4 groups of students to make 1 closed light bulb circuit each group.
  • The first thing is to create an electrical closed circuit.
  • The light will glow when the switch is turned on it means the circuit is good.
  • Now cut the wire of each circuit from anywhere and ask the students to join the cut wires with different materials each.
  • The circuit will not work, because wood, cotton, tissue, leaf and the bottle cap are all bad conductors of electricity.
  • Now connect the cut wires with any metal material the bulb will glow again.
  • The students will be able to understand very well how an electric circuit works.
  • Explain to them the use of switches and resistors and power breakers at home and its uses.

Activity Video: 
https://www.youtube.com/watch?v=QZPURSF5iH4




Wrap Up:  Wrap up the activity by re-assuring the key points learned in this activity and make sure that every individual understands conductance and resistance accordingly.

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