Lesson #7

Lesson #8
Cell theory & organelles
Objective:
Name tenets of cell theory.
Identify 4 organelles.
Write down today’s topic in your T.O.C.
Change yesterday’s topic to “Sex Ed”
1.
2.
3.
What is a cell?
Do plants have DNA?
Mahalia is looking through the microscope at high power, but doesn’t see anything. Describe TWO THINGS that she could do to see better.

Lesson #8
Cell theory & organelles
Objective:
Name tenets of cell theory.
Identify 4 organelles.
Sit in your assigned seat & take out your HW (sex ed paragraph)
Write down today’s topic in your T.O.C. Change yesterday’s topic to “Sex Ed”
1.
What are the 6 requirements of life?
2.
3.
4.
What does metabolism mean? (In your own words)
Are bacteria alive?
Do plants respond to their environment? If so, how do they respond? Hypothesize!

 Yesterday’s points
 Tardiness check
 Today’s quiz postponed until Friday because of Sex Ed assembly
 Thurs: Organelles
 Fri: prokaryotic/eukaryotic cells & quiz

 Hermaphrodite vs. intersex

Agenda
 Microscopes
 Explanation
 Worksheet
 Exit Ticket
Catalyst:
TODAY
A: Microscope drawings
•
Tonight’s Homework:
Finish class worksheet
B:
Cell Theory WS

We know all living things are organized into cells.
But do non-living things have cells, too?
How do cells do all the processes (MR GORE) that make them alive?
Paramecium video
You’ll answer these questions yourselves.

 Don’t break the high power objective lens!
 Move slides on low power; do drawings on high power
 If can’t see anything, return to low power
 Take out your 4 circles from last week

Do four drawings:
 Onion, human cheek, cloth, plastic bag
 Focus on what’s INSIDE the cells; if there are cells
Analysis Questions: Write on your paper
 What does a cell look like?
 What’s inside cells?
 Do non-living things have cells?

But do non-living things have cells, too?
How do cells do all the processes (MR GORE) that make them alive?
 What does a cell look like?
 What’s inside cells?
 Do non-living things have cells?

Cell Theory
 #1: All living things have cells
 #2: Cell is the most basic unit of life.
(Nothing smaller than a cell can be alive.)
 #3: All cells come from other cells

We know all living things are organized into cells.
But do non-living things have cells, too?
How do cells do all the processes (MR GORE) that make them alive?
…what’s INSIDE of them?

Nucleus
 Holds DNA, controls the cell
 City Hall or Brain of Cell
 In…
 plants & animals

 The area inside the cell that everything floats in
 Full of liquid
 Example:
 Air in a room
 Found in…
 Plants & animals

 The outside layer of a cell that controls what moves in and out
 Example:
 Fence & gates to a city
 Found in…
 Plants & animals

 Hard outside layer of cell that makes it stiff
 Example:
 Concrete wall outside city
 Found in:
 Plant only

 Label the cell parts on your microscope drawings

 Add up your points for today.
 Today’s work  Your folder
 Tonight’s HW: finish class worksheet
Exit Questions
Complete sentences
1.
What’s an organelle? (In your own words)
2.
3.
What does the cell membrane do?
Supposed you looked at human skin and a piece of aluminum foil under a microscope. Describe in 2+ sentences how the human skin would look different compared to the aluminum (reference the things we learned about in class today).

 Good lesson structure; inquiry focus worked
 Problem was the lab took forever and organelles was rushed. Should only do microscopes and cell theory in one lesson. Then have them save the microscope drawings and identify organelles the next day