Stf OWKTHOT' **n
t/s/ng « Macintosh computer program, QTF Ray Paint maaauras the momentum and Impact ot tailing
objects In a physics class.
COMPUTERS
Continued from Page 1
similar tools. After several years of collaboration
with the Tufts professors. Sukoiotf brought the
software to the University.
"The computer collects the data Sokolott said
In one experiment, students study movement
and motion using their own body as the subject.
Students walk hack and forth in front of a small
clicking black box. The hox is a sonic motion
detector and is hooked up to a Macintosh comput
er on the same table.
As the student paces around the room, the
detector measures the student's position as a func
tion of time At the same instant, the Macintosh
computes the students'velocity and acceleration
and plots a graph on its screen.
"It's your own body, and you see what it's
doing.'' Sokoloff said. "That's a real teaching
experience."
Students are able to interpret the results of their
experiments utmost immediately, and discuss
with the instructor what they’ve learned.
Sokoloff said studies suggest students gain u
more solid understanding of the lows of physics
when using computers in their experiments, for
several reasons.
First, students learn physics by investigating the
physical world, rather than manipulating symbols
1Students spend time ana
lysing a graph, Instead of
the drudgery of plotting it.’
David Sokoloff,
physics prolessor
or ills* tissing c.onc opts ahstrnc llv , iis with trade
nonal c ourses
"It challenges you to make predictions while
doing the experiment, instead of lust confirming
the outcome." Sokoloff said
Second, the immediate feedback from the
experiments enc mirages students to collaborate
Because the data is presented in an understand
able way. students can discuss the validity and
implications of it with peers, Sokoloff said
Sophomore Brian Codings said the computers
have helped him learn the basics.
"You get a visual image both on the computer
and what's in front of you," he said "It makes you
think a little harder about what you're seeing
Graduate teac hing fellow Ray Peini said he's
found students apprec iate the speediness of the
computers most
"The computer does the graph right there, in 20
25 seconds," he said. "You don't have to wait lo
ts minutes to find out if you need to do it again."
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