Mathematics/Physics
Mass vs Weight.
Earnest
S Garrison 
Jones
Academic Magnet 
606
S State 

CHICAGO
IL 60605 

(773)
5348600 
Objective(s):
The purpose of this miniteach is to give
the students an understanding of the concepts of Mass vs
Weight
and a basic understanding of metric
measurements.
Materials:
The
following materials are used in this presentation as handson learning
tools
and demonstration;
Inertial
Balance
6C
Clamps
3
Beakers – 1000 ml, 500 ml, 100 ml
Very
Large Sponge
Ball
of String
6 –
Ring Stands
Box
of small washers
Small
of Beads (or small box of sand)
6Stop
watches
Meter
stick
Metric
scale
Strategy:
This lesson will start with a brain –
storming session concerning the relationship and the previous knowledge
of the
concepts of Weight & Mass. The class will be motivated to formulate
Ideas
about the two concepts to be tested in the class .The second step in
this
process will to demonstrate the concept of Atoms and Density. The small
beads
will be used to simulate Atoms of matter in Mass .A class member will
be asked
to measure the mass of an empty 100 ml beaker and then after it has
been filled
with the beads. Another student will subtract the masses of the full
beaker
from that of the empty beaker and divide it into the Mass. This
procedure will
be repeated for the 500 ml and 1000ml beakers. The class will discuss
the
findings of the demonstration.
The third step in this unit will to
divide the class into groupies of four members. A
set of string, 4 washers, Ring stand, Stopwatch, and a meter
stick. The group will construct and test a pendulum that has 1 wash for
the
pendulum bob, string for the pendulum arm. The group will count the
number of
oscillations made by the pendulum in thirty seconds. This procedure
should be
repeated by adding one washer at a time and counting the number of
oscillations
up to four washers.
Performance
Assessment:
The students will be expected to draw a
graph of their finds of the number of oscillations made by the pendulum
in
thirty seconds . For the first demonstration the class would be
expected to
find the densities of all three beaker and compare them.
Each student will prepare a paper explaining
their views on weight vs mass with references from the internet to
support
their position .
Conclusions:
The
individual students will support their final positions in a paper to be
turned
in to the instructor.
References:
Density
http://encarta.msn.com/find/Concise.asp?ti=03FD5000
http://es.rice.edu/ES/humsoc/Galileo/Student_Work/Experiment95/galileo_pendulum.html
Gravity Tutorials
http://www.curtin.edu.au/curtin/dept/physsci/gravity/index2.htm