Students will use liquid crystal strips to determine what is the optimal
temperature range for seed germination.
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Attach temperature strips inside plastic bags with adhesive. (Temperature
side up.)
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Rinse the two small cups with fresh tap water this will remove any molds
or spores clinging to it.
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With clean hands, fold a clean piece of abosorent paper towel into four
thicknesses.
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With as little handling as possible, cut the folded paper towel to fit
the dish. The fit need to be exact, but the paper towel should cover most
of the bottom of the dish.
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Wet the paper towel in the dish with fresh tap water. Swish the water about
until all four layers of paper towel are very wet. Pour excess water into
your empty container.
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Arrange one type of seed into each dish so that the seeds do not touch
one another.
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Open a new plastic sandwich bag by blowing into it. Keep your hands out
of the bag to avoid contaminating it. Slide your open dish into the puffed-up
bag, keeping a small dome of aire over the seeds.
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Close the mouth of the bag and close it securely. Attach a label of the
name of the seeds in the bag and the date. Place on the outside of the
bag.
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Place all the greenhouses in the area designated by your teacher.
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Clean up your working area. Clean, dry, and put away all equipment.
CURRICULUM STANDARDS/PROFICIENCY PERFORMANCE OBJECTIVES:
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graphing
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measuring
EVALUATION CRITERIA:
This project will be evaluated using pre and post tests and journals.
EXTENSION AND ENRICHMENTS:
Continue with planting seeds and measuring plant growth.
Date last revised February 24, 1996