Transcript - Office Mix

Materials
&
Procedure
STEM Fair 2015
Materials
 Materials
are anything that you use in your
experiment.
 Materials
used in the experiment need to be
listed in specific amounts and sizes.
 Keep
in mind, you need to write your
materials in specific amounts and sizes so
that anyone can replicate your experiment.
Materials- Amounts
 Examples
of specific amounts could be:
Numbers (Ex. 3 paperclips, 5 ice cubes, etc.)
 Cups (Ex. 6 cups of water, 3 cups of orange
juice, etc.)
 Ounces (Ex. 7 oz. of water, 12 oz. club soda)
 Pounds (Ex. 5 lbs. of chocolate, 1 ½ lb. of
clay, etc.)
 Tablespoons
 Amounts are the weight of or number of each
material in your experiment.

Materials- Sizes
 Examples
of specific sizes could be:


Large
Medium

Small
How would you improve this list
of materials?


One empty plastic soda or water bottle
 Vinegar
 Balloon
 Baking soda
 Funnel or piece of paper
When writing your materials out, ask yourself… Would
people be able to replicate my experiment?
By adding sizes and
amounts!

One small empty plastic soda or water bottle
 1/2 cup of vinegar
 One small balloon
 3 tablespoons of baking soda
 One large funnel
 Remember…
Be as specific as you can!
Writing a Procedure
A
procedure is a numbered list of the
steps that you will follow to complete
your experiment.
 It should be detailed.
Remember,
as with the materials, the
procedure should be written so that any
one can be able to try your experiment.
Think
of it as a step by step recipe!
What makes this procedure a good
procedure?
1.
Gather all materials.
2.
Measure 2 tablespoons of plain water, 2 tablespoons of saltwater, and 2
tablespoons of distilled water into each ice tray.
3.
Place the ice trays in the freezer and allow water to freeze for 8 hours.
4.
5.
Line up three clear plastic cups on the table or counter. They should be in
a place where you can observe them easily.
Remove the ice from the freezer and place each ice cube into a plastic
cup.
6.
7.
Keep track of the ice in five minute increments.
In your science notebook, note the changes in each ice cube as it melts.
8.
Write down the time it takes each ice cube to melt completely.
Repeat Steps 1-8 two more times.
9.

Source: http://www.education.com/science-fair/article/ice-melting/
What made that procedure a
good procedure?
It’s
detailed!
Anyone can follow it!
It’s organized!
Numbered!
Remember…
Your list of materials and your
procedure should be detailed enough
and well organized so anyone can
follow it!
