1. Introduction to Life Science Lesson 23

2. What makes something alive?
Activator
Take 5 minutes to brainstorm and answer the following question in your science notebook
What makes something alive?
After 5 minutes of independent work take another 5 minutes to discuss as a group
We will create a word web as a class after the discussion
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3. Characteristics of Living things
All living things have a cellular organization.
A cell is the basic unit of life.
Unicellular- one celled
Multicellular- more than one cell
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4. Characteristics of Living Things
2. Have Different Levels of Organization
Living things must be able to organize simple substances into complex ones.
Living things organize cells at several levels:  
Tissue
Organ
Organ system
Organism
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5. Characteristics of Living Things
3. All living things use energy.
Energy is used to nourish, repair and create new cells.
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6. Characteristics of Living Traits
4. Living things react to stimuli.
A stimulus is something in the environment that causes a reaction, or a response.
A response is an action or change in behavior.
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7. Classwork https://www.youtube.com/watch?v=30qOijVBS7o
For the first 2o minutes work independently to read the article and answer the questions
Discuss for 5 minutes with a partner
Discuss difficult questions as a class for 5 minutes
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8. Exit Ticket
Write down the four characteristics of living things we discussed today
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