Gold Seal Lesson:
Algae Reproduction

Copernicus Education Gateway

 

Subject:

Science

Grade:

 

 

5-8

 

 

ICLE Standards:

 

 

Mathematics -
Mathematical Connections - Apply mathematical thinking and modeling to solve problems that arise in other disciplines.

Statistics -
Systematically collect, organize, and describe data. Evaluate arguments that are based on data analysis.

Science -
Science as Inquiry - Develop the abilities of scientific inquiry.

 

 

Performance Task:

 

 

Malcomb is a greens keeper at a large golf course. Part of his job is keeping the ponds and water hazards free from pond-scum. He must periodically add chemicals to the water to kill algae while, at the same time, causing little or no harm to fish and other plant life. He must have an understanding of how algae reproduce and how light affects their rate of reproduction. To help Malcomb, conduct the following inquiry.

  1. Observe prepared slides of several types of algae that identify and illustrate the various stages of reproduction.

  2. Collect relatively clear samples of pond water and distribute equal portions into several jars (5-8).

  3. Vary the amount of light each specimen receives and determine the population of each specimen on a daily basis. (It would be best if this could be done at the same time each day.) Keep a record of these populations.

  4. Organize your data, using charts, tables, and/or graphs.

  5. Determine the growth rate of the algae for each of your species.

  6. State at least two conclusions about the reproduction of algae as a function of light.

  7. Write a brief report summarizing your inquiry and stating what advice you would give to Malcomb.

 

 

 

Knowledge / Skills:

 

 

Perform operations with signed (positive and negative) numbers, including decimals, ratios, percents, and fractions.  (m1)

Understand the best procedures for statistical data collection, organization, and display.  (m5)

Identify the cell as a common unit between living things; understand cell structure and the functions they perform.  (s9)

Identify parts of a compound light microscope, perform functions, and focus in low and high power.  (s76)

Know and apply the principles of scientific inquiry.  (s114)

Use expository writing skills in subjects other than English language arts.  (ela58)

 

 

Rubric:

 

 

4 Points  =  The student makes a complete response to all parts of the task. He/she can successfully carry out a scientific inquiry. The student shows a clear understanding of how algae reproduce and grow. The data collection for the inquiry is of high quality and the data is organized neatly and meaningfully. The student is able to choose a useful method to display the data. The student is able to state at least two conclusions as a result of the inquiry. The written report is of high quality, giving a clear and concise summary of the inquiry and providing accurate advice to Malcomb.

 

 

3 Points  =  The student can make a complete response to all parts of the task only with some coaching. He/she shows some lack of understanding of the concepts and of the skill needed to conduct the experiment systematically. There are some flaws in the organization and analysis of data. The student can make only one reasonable conclusion based on the data he/she has collected.

 

 

2 Points  =  The student's response to the task is incomplete. He/she displays only limited knowledge and techniques necessary to complete the task and relies heavily upon others for support. The data collection, organization, and analysis is disorganized and contains several errors. No reasonable conclusions can be made based on data obtained.

 

 

1 Point  =  The student does not complete the task and shows no understanding of scientific inquiry. He/she does not demonstrate an understanding of how algae reproduce and grow. The inquiry is so poorly conducted that no meaningful data was collected, His/her work is disorganized, inaccurate, and incomplete. The student is unable to make any conclusion.

 

 

Keywords:

 

 

SCIENTIFIC INQUIRY
TECHNICAL WRITING
GENERAL SCIENCES
PLANTS 
LAB EXPERIMENTS
CHEMISTRY

 

 

Grades:

 

 

Kg [] - 1 [] - 2 [] - 3 [] - 4 [] - 5 [X] - 6 [X] - 7 [X] - 8 [X] - 9 [] - 10 [] - 11 [] - 12 []

 

 

ICLE Application:

 

 

D

 

 

 

 

 

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