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Carolina EcoKits®: Population Growth and Carrying Capacity (with voucher)

(in stock)


Grades 9-12.

  • Observe and measure the population dynamics of duckweed in a closed system
  • Graph the population growth and explore the differences between exponential and logistic growth
  • Determine the carrying capacity of a closed system

The fast reproduction rate of duckweed makes it a perfect organism for studying population growth. Students first predict what changes will take place within a population in a closed system. After creating a closed-system environment for duckweed, students investigate their predictions by completing regular counts of the population over a 3- to 4-week period. Using the collected data students graph the population data, calculate growth rate, and determine the carrying capacity of the system. Kit accommodates a class of up to 30 students working in pairs and includes a voucher to request perishable material later at your convenience.


What’s Included:
  •  Duckweed (Lemna minor)
  • 15 Plastic Containers and Lids
  • 15 Hand Lenses
  • 15 Jumbo Pipets
  • 1 Teacher’s Manual and Reproducible Student Guide
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Needed But Not Included:
  • 15 Permanent Markers
  • 1 Light Source
  • 1 Spatula
  • 1 Push Pin or Thumbtack
  •  Graduated Cylinders (to measure 400 mL of springwater)
  •  Springwater
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