14-5
EXAMPLES OF ADJUSTABLE THERMOMETERS MADE BY STUDENTS
“TROMBONE” thermometer-
Cut and mark cardboard like this:
Fold flap back
to form
a long
pocket.
long thin hole
WILLOW WHISTLE” thermometer-
Made from a green stick of willow
or a similar tree.
Loosen the bark by tapping it,
and remove it as a single tube.
Cutl a long thin hole in the bark tube.
Cut and mark
this piece,
which fits
into pocket.
FRONT VIEW
piece of thin tape of
aluminum can to seal pocket
Mark several stripes of different
lengths on the stick.
ONE
SIDE
OTHER
SIDE
Put the stick back into the bark tube,
and mark numbers on the bark.
Slide tabe to change
temperature reading.
BACK VIEW
Turn the stick to change temperature reading.
PENCIL AND TEST TUBE thermometer-basically the same as the “Willow Whistle,”
except that you use a six-sided pencil and a thin glass tube, or blood collection tube.
Scrape the paint off the pencil to a
differenct point on each of the six sides.
Make a long thin hole in a piece of paper,
and mark it with degrees.
Wrap the paper around the pencil and
put it into the tube.
Turn the pencil to change the readings.
You can make one of these adjustable thermometers in a few minutes. Try it. Or
see if your students can invent their own.