Tuesday, May 31, 2016

STEM Brine Shrimp Lab- Day 2

Today you are going to design an experiment to test a variable of your choice relating to brine shrimp.

Suggestions for variables  (or come up with your own area) that affect the hatching rate of brine shrimp eggs:
     - Temperature
     - Salinity (salt content) of the water
     - Size of container
     - Type of container
     - Ratio of eggs to water

If you are working with salinity, a heaping spoonful of salt in a liter of spring water will give you a salt concentration of 25 parts per thousand.   You can vary the amount of salt to change the concentration.

In your composition notebook you should already have a this lab titled and a 10 sentence section titled 'Background.'

Working with your group members you job today is to come up with your:

Problem- (Stated as a question)

Hypothesis- (What you are predicting what will happen in your experiment)

Materials- (A list of the materials you will need for your experiment)

Procedure- (A DETAILED NUMBERED list of the steps of your experiment)

On the index card Mrs. Keller provides, write a list of materials your group will need for Thursday.  Be complete and specific as possible. Turn this in to Mrs. Keller. 

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