General, Cool Science Experiments, Physics Projects for Kids, Science Experiments

Paper Circuit Cards

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Paper Circuit Cards

For the engineering and scientific minds, this STEAM activity is great! Lights can be as easy as flipping a switch or hitting a button to turn on, but with this activity kids actually gather their thoughts to figure out how to make the LED light work. What they will realize, is that it is all about making sure there is a path from the negative end of the battery, through the light, and back to the positive side of the battery. Like I said – perfect for all the little minds who like to figure out life’s mysteries and how things work!

Note: We did this activity with our eight and eleven year olds and made sure the two year old was far enough to observe what we were doing, but not close enough to reach a battery. They can be a choking hazard for young children.

Supplies

  • Card stock
  • Scissors
  • 3v lithium button battery
  • 5mm LED’s of assorted colors
  • Copper tape, ¼ inch wide and double sided conductive

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Take one of the LED lights out to be sure it works with the battery beforehand.

The shorter end of the LED light is the negative end, whereas the longer end is the positive end. The negative side of the battery is usually the bottom and the positive is on top (and usually is indicated as so). Match the negative part of the LED light to the negative part of the battery.

If it is correct, the LED should light up! Electrons must flow from the negative of the LED light to the negative of the battery.

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We used the copper tape to make a shape –in our case a rectangle. Three of the corners were connected while there was a gap between the ends of tape in the fourth corner.

We used the copper tape to attach each end of the LED light to either side of the gap. It’s important the two ends don’t touch each other and that there is a gap in the circuit, as you don’t want to cause a short circuit.

We placed the battery in the open corner so that it touched only one end of the copper tape. Using another piece of copper tape, we connected the top of the battery to the other end of the tape in the corner.

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Looking for educational toys, science kits, monthly crafts for kids, monthly subscriptions for kids, a monthly craft box or kids craft subscription? Green Kid Crafts, kids craft subscription and maker of the best subscription boxes, including award-winning arts and craft subscription boxes and best monthly subscription boxes has what you're looking for!Looking for educational toys, science kits, monthly crafts for kids, monthly subscriptions for kids, a monthly craft box or kids craft subscription? Green Kid Crafts, kids craft subscription and maker of the best subscription boxes, including award-winning arts and craft subscription boxes and best monthly subscription boxes has what you're looking for!Looking for educational toys, science kits, monthly crafts for kids, monthly subscriptions for kids, a monthly craft box or kids craft subscription? Green Kid Crafts, kids craft subscription and maker of the best subscription boxes, including award-winning arts and craft subscription boxes and best monthly subscription boxes has what you're looking for!
If done correctly, the LED should light! If it does not, flip the battery over and try again. Check all the connections to be sure there is a continuous path from the negative end of the battery, through the negative end of the LED, and back to the positive end of the battery.

We only made ours with one light, but you can challenge yourselves to make circuits with more than one! Each light would have its own independent path from the other. It could almost turn into an additional experiment : to see if it matters what colors the lights are, how many lights can you get to light in one circuit, etc.

It was fun to go “behind the scenes” to discover how lights work!

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For more science experiments for kids, please check out our blog!

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Photographs and content by: Heather Kucenski

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