What Is Life?

1
What Is Life?

• Investigation 1
• Populations and Ecosystems

2
Is Anything Alive In Here?

• Share with your group observations of the vial
  you took home.

3
Is Anything Alive In Here?

• Make observations of the 5 vials.
• Note any changes and draw them on the Five
  Materials Observation sheet.
• If there is no change, you should record NO
  CHANGE.

4
Is Anything Alive In Here?

• Do you notice any changes in the vials today?
• Do you see evidence of life in any of the vials?
  Which ones?

5
Is Anything Alive In Here?

• Circulate around to other groups to compare vials.

6
Is Anything Alive In Here?

• Liquid 2 is sugar and water. The sugar was added
  to provide food in case any of the materials was
  alive and need sugar as food.
• Did any of the vials with sugar water provide any
  interesting results?

7
Is Anything Alive In Here?

• Material B is yeast. The bubbling and possible
  popping of the cap are the result of gas exchange
  going on in the vial. Gas exchange is evidence
  of life. The yeast is alive.

8
Life in Different Environments

• Three Liquids
• Liquid 1 Salt water
• Liquid 2 Sugar water
• Liquid 3 Plain water

9
Life in Different Environments

• Can you identify any of the other four materials?
• A red sand
• B yeast
• C polyacrylate crystals
• D radish seeds
• E brine shrimp eggs

10
Life in Different Environments

• Fill in the information for the liquid
  environment you investigated.
• Circle yes or no to indicate whether the material
  showed evidence of life in that environment.
• Write a few words describing the evidence in
  those cases where life was indicated.

11
Life in Different Environments

• Whole Class Data
• Salt water Group
• Sugar water Group
• Plain water Group

12
Results

• Some organisms can appear to be non-living.
• When organisms are put into an appropriate
  environment, they can become active.
• Different organisms have different environments
  that allow them to become active.

13
Petri Dish
14
What did we do?

• Content

• Strategy

15
What did we do?
16
The Five Es (or 7 Es)

• Elicit and
• Extend

• Engage
• Explore
• Explain
• Elaborate
• Evaluate

17
Science and Technologyfor Children (STC)

• Focus
• Engage
• Explore
• Apply