1. Use logic and explore
As a group, separate these photos into 2 categories. Give each category a name and what it takes to belong to this category.
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2. Use logic and explore
As a group, separate these microscopic photos into 2 categories. Give each category a name and what it takes to belong to this category.
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3. Living Things Make this title on the next page of your notebook.
Write down AT LEAST the things in green.
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4. Turn and Talk
If you found an unknown “thing” while out wandering at the beach, how would you determine if it was alive or not? Discuss with a partner for 30 seconds.
Scientists have had these same discussions for centuries..
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5. Add to notes… To be alive Definition/Examples Respond to stimuli
Scientists agreed on these 6 criteria for something to be “alive”
To be alive Definition/Examples
Respond to stimuli
Reproduce
Grow
Move
Metabolize
Made of Cells
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6. Add to notes…
Respond to Stimuli An organism must react to outside influences in its environment
click here to see sunflowers follow the sun
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7. Try it out – see if your partner is alive
Quickly slap your hands together right in front of your partner’s eye (without touching) Is there a response to this stimuli?
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8. Reproduce An organism must be able to make copies of itself
Add to notes…
Reproduce An organism must be able to make copies of itself
click here to see bacteria reproduce
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9. An organism must be able to increase in size
Add to notes…
Grow
An organism must be able to increase in size
(Most of the time you can’t see this happen before your eyes, but you can see evidence of growth)
click here to watch garlic grow
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10. Move This can be moving from place to place or internal movement
Add to notes…
Move This can be moving from place to place or internal movement
click here to watch amoeba movement
click here to see water transport in plants
click here to watch a snake attack
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11. Add to notes…
Metabolize An organism must take in nutrients, extract what it needs, and get rid of waste
click to see spiderlings eat their mother
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12. Made of Cells An organism must be made of at least one cell
Add to notes…
Made of Cells An organism must be made of at least one cell
one-celled protist
one-celled bacteria
several-trillion-celled
several-trillion-celled
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13. Turn and Talk
So is EVERYTHING on Earth either living or non-living? What about things that are dead? They can’t reproduce or respond or grow, but does that put them in the same category as rock and plastic?
log
leather
Turn and talk for 30 seconds to see if you can name 3 other things which are neither living nor non-living
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14. (copy this chart into your notes)
Add to notes…
Everything on Earth can be placed in 3 categories:
(copy this chart into your notes)
Characteristic
Living
Once-Living
Non-Living
respond
reproduce
grow
move
metabolize
cells
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15. Add to notes… We already established the criteria for “living”
Characteristic
Living
Once-Living
Non-Living
respond
reproduce
grow
move
metabolize
cells
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16. Interpret what you see
Remember those things which were neither living nor non-living? We call them “once-living” because they used to be alive, but are now dead. We can still see their cells, though
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17. Add to notes…
Once-living things have cells, but no other characteristics of living things
Characteristic
Living
Once-Living
Non-Living
respond
reproduce
grow
move
metabolize
cells
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18. Interpret what you see
Non-living things never were alive, never will be alive. They do not respond, reproduce, move, metabolize, nor grow. They do NOT have cells.
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19. Add to notes…
Non-living things share no characteristics with living things
Characteristic
Living
Once-Living
Non-Living
respond
reproduce
grow
move
metabolize
cells
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20. Check your understanding
On your notes page, number from 1 to 5 For each item that follows, label it as Living or Once-living or Non-Living
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21. Living Once-Living or Non-Living
Living Once-Living or Non-Living? Chair (Made of plastic and metal and vinyl)
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22. Living Once-Living or Non-Living? Fallen Leaves
Check your understanding
Living Once-Living or Non-Living? Fallen Leaves
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23. Living Once-Living or Non-Living? Cotton t-shirt
Check your understanding
Living Once-Living or Non-Living? Cotton t-shirt
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24. Living Once-Living or Non-Living? Computer chip
Check your understanding
Living Once-Living or Non-Living? Computer chip
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25. Living Once-Living or Non-Living? Fern
Check your understanding
Living Once-Living or Non-Living? Fern
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26. Big Idea:
Cells are the key!
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