Electrical conductors and insulators

Grade 3 · Free printable game: Sorting hoops

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Sorting hoops

Sort the cards, then let the numbers tell you if you got it right!

Cut out the cards. Sort them into piles: put each card on the hoop where it belongs. Then add up the little numbers on the cards in each hoop. If every total matches the number under its hoop, you sorted them all correctly. If a total is wrong, a card is in the wrong hoop: find it and move it!

Electrical conductorsTotal: 40
Electrical insulatorsTotal: 33
Ha plastic ruler7
Ja glass marble6
Da wool sweater2
Ba paper straw4
Ka steel spoon7
Aa cork7
Can iron nail1
Laluminum foil8
Ea steel paper clip7
Ga rubber band7
Ia copper wire9
Fa gold ring8
Sorting race for 2 players: shuffle the cards face down. Take turns to turn one over and put it in a hoop. If your partner thinks it is in the wrong hoop, they say “Check!” and you talk about it. When all the cards are down, add up each hoop. Every total right? You both win! Then swap who goes first and try to beat your time.

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Electrical conductors and insulators

Grade 3 · Worksheet

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Circle the correct answer.

  1. Which of these is an electrical insulator? a steel paper clip     aluminum foil     a steel spoon     a cotton sock
  2. Is a wool sweater an electrical conductor or an insulator? insulator     conductor
  3. Which of these is a good electrical conductor? an iron nail     a plastic ruler     a paper straw     a wooden spoon
  4. Is a rubber band an electrical conductor or an insulator? conductor     insulator
  5. Is a wooden spoon an electrical conductor or an insulator? conductor     insulator
  6. Is a glass marble an electrical conductor or an insulator? insulator     conductor
  7. Which of these is an electrical insulator? a steel spoon     a wooden spoon     a steel paper clip     a brass key
  8. Which of these is a good electrical conductor? a glass marble     a wooden spoon     a wool sweater     a steel spoon
  9. Is a gold ring an electrical conductor or an insulator? insulator     conductor
  10. Is a plastic ruler an electrical conductor or an insulator? insulator     conductor
  11. Is a cotton sock an electrical conductor or an insulator? conductor     insulator
  12. Which of these is a good electrical conductor? a copper wire     a paper straw     a wooden spoon     a rubber band
  13. Which of these is an electrical insulator? a rubber band     aluminum foil     a steel spoon     a steel paper clip
  14. Which of these is a good electrical conductor? a brass key     a cork     a cotton sock     a glass marble
  15. Is a paper straw an electrical conductor or an insulator? conductor     insulator
  16. Which of these is an electrical insulator? a gold ring     a copper wire     aluminum foil     a cork
  17. Is a steel spoon an electrical conductor or an insulator? insulator     conductor
  18. Which of these is an electrical insulator? a gold ring     a glass marble     a brass key     a steel paper clip
  19. Which of these is a good electrical conductor? a steel paper clip     a rubber band     a glass marble     a paper straw
  20. Is a cork an electrical conductor or an insulator? insulator     conductor

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Electrical conductors and insulators

Grade 3 · Answer sheet

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Sorting hoops

Electrical conductors (total 40): a copper wire (I, 9), aluminum foil (L, 8), a steel paper clip (E, 7), a steel spoon (K, 7), a gold ring (F, 8), an iron nail (C, 1)

Electrical insulators (total 33): a paper straw (B, 4), a glass marble (J, 6), a plastic ruler (H, 7), a rubber band (G, 7), a wool sweater (D, 2), a cork (A, 7)

Worksheet

  1. Which of these is an electrical insulator? a cotton sock
  2. Is a wool sweater an electrical conductor or an insulator? insulator
  3. Which of these is a good electrical conductor? an iron nail
  4. Is a rubber band an electrical conductor or an insulator? insulator
  5. Is a wooden spoon an electrical conductor or an insulator? insulator
  6. Is a glass marble an electrical conductor or an insulator? insulator
  7. Which of these is an electrical insulator? a wooden spoon
  8. Which of these is a good electrical conductor? a steel spoon
  9. Is a gold ring an electrical conductor or an insulator? conductor
  10. Is a plastic ruler an electrical conductor or an insulator? insulator
  11. Is a cotton sock an electrical conductor or an insulator? insulator
  12. Which of these is a good electrical conductor? a copper wire
  13. Which of these is an electrical insulator? a rubber band
  14. Which of these is a good electrical conductor? a brass key
  15. Is a paper straw an electrical conductor or an insulator? insulator
  16. Which of these is an electrical insulator? a cork
  17. Is a steel spoon an electrical conductor or an insulator? conductor
  18. Which of these is an electrical insulator? a glass marble
  19. Which of these is a good electrical conductor? a steel paper clip
  20. Is a cork an electrical conductor or an insulator? insulator

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