2. Tin Can Phone
This activity number two on our list of science activities for toddlers and preschoolers might sound silly considering that we live in an age of cellphones and advanced technology, but the satisfaction of watching your project come to life is priceless. Find two empty cans and a string which will serve a wire for the phones. Remove the tops of the cans and lay them upside down. Hammer a nail through both of them to make a little hole for the string. Connect the cans with the string by knotting inside. Instruct the children how to use the phones. One of them should speak directly to the can while the other kid will put the can to his ear and listen. The sound travels over the wire (string) because vibrations travel through the air. Discuss with the children how the phones work.
