The Great Stain Remover Hunt
"Quick, get some club soda!"
Students stain several strips of white cloth with five
materials--grape juice, mustard, chocolate sauce, ketchup and grass--and
then test the effectiveness of several "cleaners" to remove the stains
as well as the amount of effort it takes to remove them and report the
Stain Removers to Test:
- Strips of white cloth
(old sheets, old white shirts, etc.)
- Grape juice
- Chocolate sauce
| Water Hand soap Laundry detergent Others
- In collaborative groups, have the students stain strips of white cloth
with spots of grape juice, mustard, chocolate sauce, ketchup and
grass into the fabric with a coin.)
- Brainstorm a list of possible stain removing agents to try on the
- Ask the advice of parents, grandparents, the local cleaners or other
community members about how to remove the 5 stains. Add these things
to the brainstormed list.
- In small groups,
or with a partner, test the cleaners on each stain. How well does
it clean the stain? Rate how effective
the cleaner was on a scale of 0 to 5. "O" means that the stain was
not cleaned at all and "5" means that the stain was completely removed.
How difficult was it to remove the stain with the cleaner? Rate the
effort it took to remove the stain on a scale of 0 to 5. "0" means
that it was very easy and "5" means that it was very hard. Some cleaners
may work well but may take a lot more scrubbing than others. Print
out a Data Sheet
for each group to use to collect the data. Be sure to read What
- As the students proceed
in their investigations, engage them in a discussion of their
observations. Ask questions such as, "What else did you notice?"
- As a whole group, discuss the results and the similarities and differences
found in the effectiveness of identical cleaning agents, if any. Hypothesize
as to why the results are different. Conduct the experiment again,
if necessary, to confirm the results.
Want to Learn More About Removing Stains?
If you would like to learn more about how to remove
stains, here are some links
to sites with additional information for you to
TEAMS Home Page
LACOE Home Page