Description
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 perishable material when kit is shipped.
Teachers User Manuel.This item contains living or perishable material and ships via 2nd Day or Overnight delivery.
What’s Included:
- 1 x Duckweed (Lemna minor)
life plant - 15 x Plastic Containers and Lids
- 15 x Hand Lenses
- 15 x Jumbo Pipets 3ml
- 1 Teacher’s Manual and Reproducible Student Guide
Needed But Not Included:
- 15 Permanent Markers
- 1 Light Source
- 1 Spatula
- 1 Push Pin or Thumbtack
- Graduated Cylinders (to measure 400 mL of spring water)
- Springwater
Duckweed, Living, Unit of 100-150 – MAS 5061
Lemna minor. Monocot. Small plants, often covering the water like a green carpet. Unit contains 100 to 150 plants. With instructions.
