Monitoring At What Temperature Seeds Will Germinate Using Liquid Crystal

AUTHORS:
Margaret Spellacy Middle School and Computech Center
655 East 162nd Street
Cleveland, Ohio 44110
Phone Number: 216-531-2872
Fax Number 216- 383-4657
Internet Address: SPELLAMS@KENTVM.EDU
Grade Level/Subjects: 5 - 8/Mathematics and Science
OVERVIEW OF EXPERIMENT:

Students will use liquid crystal strips to determine what is the optimal temperature range for seed germination.

 RESOURCES/MATERIALS:

STUDENT OBJECTIVES: ACTIVITIES/PROCEDURES:
  1. Attach temperature strips inside plastic bags with adhesive. (Temperature side up.)
  2. Rinse the two small cups with fresh tap water this will remove any molds or spores clinging to it.
  3. With clean hands, fold a clean piece of abosorent paper towel into four thicknesses.
  4. 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.
  5. 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.
  6. Arrange one type of seed into each dish so that the seeds do not touch one another.
  7. 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.
  8. 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.
  9. Place all the greenhouses in the area designated by your teacher.
  10. Clean up your working area. Clean, dry, and put away all equipment.
  11. CURRICULUM STANDARDS/PROFICIENCY PERFORMANCE OBJECTIVES:

    graphing
    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


This activity has been copied, with permission, from the Kent State University server to ours, to allow faster access from our Web site. We encourage you to explore the original site.

Return to Reach Out! Home Page
To Reach Out! volunteer organization at the University of Michigan