Split children into teams of two. Blindfold one of the two partners. Present half of the objects to the person who can not see. Have the seeing person make noise with the object. Ask the blindfolded person to guess what it is. It is the blind folded persons job to figure out what is making the noise. After a few ask the partners to switch. Discuss which items were easy to recognize and which ones were more difficult. Ask why?
Have kiddos compare their finger prints. Using a pencil color a dark grey spot on a piece of paper until you see powder forming. Have kids roll their finger in the pencil powder. Place a piece of tape over that finger, pressing hard but not rubbing. Remove the tape and place it on a piece of paper. They should see a perfect imprint of their fingerprint. Have them examine their print with the magnifying glass. Ask them to compare them to others. How are they the same? How are they different?
Have kids try and stab a potato with a plastic straw. (It will bend) Ask them to experiment with the way they hold the straw. Tip: make the straw stronger by covering the hold on one end.
Does a Tin Can Phone Really work?
Two tin cans (poke a hole in the bottom with a nail)
Optional: various other sizes of cans
Have kids pick from the string, yarn, fishing line or rope. Put one end through the hole and tie it into a knot. Repeat with the other end in the remaining can. Have one kiddo take one of the cans and another take the other can. Stretch the cans until the string is pulled tight. Have one child speak into the can and the other listen. As long as the string is pulled tight, the children will be able to hear each other. Challenge kids to try the different connecting cord. Does which material works the best? Does the length of the string make a difference?
25-50 Plastic or paper cups
Build a tower with these cups. How tall is your tower? What could you do to make it larger? Taller?
Give the kiddos these instructions and see them freak out when the keys don't hit the floor
Tie the keys to one end of the string.
Next, tie the paper clip to the other end of the string.
Put the string over your finger so that the keys hang straight down, just a few centimeters.
Hold the paper clip with your other hand.
Then, let go of the paper clip. What happens?
Because the keys weigh more than the paper clip, the paper clip gets pulled forward pretty fast by the falling keys. But no matter how fast the paper clip is going forward, it also has to fall downward because of gravity. Then it keeps going until it wraps around your finger.
The Strongest Shape
Behold the Mighty Power of Paper!
Tape or Glue
Build three shapes, a triangle, a square and a cylinder. Connect taping or gluing the ends together.
Ask the kids to predict which shape will be the strongest and hold the most weight. Ask them to think about shapes they see in buildings and bridges. Then have them test their prediction by seeing which one can support the most books.
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