Projects
Students determine how to get the most traction
from rubber band powered wooden race cars by placing additional
rubber bands on the wheels. The distance the cars travel is
measured. Traction and friction are two terms that are used in this
activity.
Students are shown how a camera works with a lens
and piece of paper and they measure the focal length of the lens.
They are given a piece of light sensitive paper on which they place
objects to make "negative" shadows. They are provided with
diffraction gratings through which they can view the spectrum of
various light sources, including a laser.
Magnets
Magnets are used to demonstrate how a compass
works. In addition, students work in small groups of two or three to
find the force lines from a magnet. These can be drawn on a piece of
paper using iron filings and two magnets. Instructions are given to
teach the students how to make an electromagnet.
Students learn the difference between series and
parallel circuits by working with small circuit boards operating on
three volts. They are shown how a light bulb works. They also work
with an Light Emitting Diode (L.E.D.).
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