this Daily Classroom Special:
Science to Go provides easy yet meaningful
science activities for grades k-8. Science to Go was written
by Barbara Smith, Magnet Coordinator at Harvard Elementary, Houston
(TX) and former Teachers Network web mentor.
Determine effects of variables.
Compare and contrast.
Kite string or crochet thread, meter sticks, scissors, metal spoons,
different pieces of metal dinnerware and serving utensils.
- Have students measure and cut one meter of string per student.
- Demonstrate how to make a loop in the center of the string
that will hold onto the handle of a spoon, yet can still be undone
- Gently wrap one end of the string around the last joint of
your left index finger, and the other one around your right (only
2-3 wraps around).
- Insert the tips of your index fingers in your ears, bend over,
and allow the spoon to swing gently. Bump the spoon against a
table or desk edge. You should hear a deep gonging sound.
- Experiment with different variables (metal type, weight, different
utensils, different handle types, etc.)
- Have students report their findings; comparing and contrasting
effects of the variables.
Related Web Sites
History and physics of sound, parts of the ear, interactive sound
NOVA Online/ Faster
Than Sound: Sonic boom explained, history of land, air and speed
records, teachers' guide.
Sound Safaris: Sound files of animals from around the world
to download and listen to. Good photos, too.
VI Online: Sound FX
Page: Tons of wav. files of common sounds and sound effects.
(Has a link to company homepage with classifieds that might require