WalkIn Take out notebook pencil box and agenda
Walk-In • Take out notebook, pencil box and agenda. • COPY THIS WEEK’S AGENDA!
Getting to Know Your New Group! • Go in order at your table: A B C D. • Each person says – Their name – Their birthday – Their favorite pizza topping, if you have one! – USE QUIET VOICE LEVELS!
Review Class Rules • Walk-In routine: Unpack/backpack/answer question? • Pack-Up routine: When/where to wait? • Leaving your seat – what do you do first? • Pencils – borrowing, when to sharpen? • What do you do first when answering a question or speaking to the class? • Scoreboard points? Leveling up?
Learning Target • Students will understand the difference between living and non-living things, and start learning about the Cell Theory. • Students will take notes to build background.
The Cell Theory What is a cell?
Two-Column Notes • Set up your notebook page with a narrow column for topics/headings, and a wider column for information notes.
Is paper a living thing? • Examine the piece of paper your group is given. • Find out what it can and cannot do. • Decide if it is a LIVING thing or not, and be ready to DEFEND your answer.
(Discuss, but don’t write. ) Characteristics of Living Things • • • Some can move. Some need to be fed Some make their own food. Some breathe CO 2, some breathe O 2. They reproduce in different ways. But…
Cells • ALL living things are made up of cells!
Walk-In • Take out notebook, pencil box. • Answer at the back of your notebook: • What is a cell?
Definition • A cell is the smallest part of a living thing. • “Building blocks” of life
Microscopic Size • Cells can be seen only with a microscope. • Some living things contain just one cell! • Cells have structures (parts) inside them.
The History of Cells • Watch this video clip about the history of cells and the timeline for discoveries about them! • Focus on: – How scientists discovered cells and their abilities or properties. – Tools that made it possible to view cells.
Discuss, but don’t write! The name “cells”… • Robert Hooke looked at cork under a microscope in 1653. • The spaces inside reminded him of small rooms called cells that monks used, so he called them “cells”. • He was looking at (dead) plant cells!
Cell Theory 1. All living things are made of cells.
(Cell Theory continued) 2. Cells are the basic unit of structure and function in living things.
(Cell Theory continued) 3. Living cells only come from other living cells.
So how did cells start? !? • If all cells come from preexisting cells, where did the first cell come from? !? • Watch this video clip that provides some answers!
Practice • On a LEFT SIDE PAGE, – Trace your hand.
Label and fill in the fingers… • Label each finger as follows, then FILL IN the information in your own words: – 1 – What are cells? – 2 – First part of cell theory? – 3 – Second part of cell theory? – 4 – Third part of cell theory? – 5 – Can a cell live by itself? Explain.
Apply what we know… • A kitten notices a piece of string can move, bend, absorb milk and reproduce when torn in half. It thinks the string is alive! Is the kitten right? Explain your answer!
• The string has some of the ATTRIBUTES of life. It seems to do many of the things that living things can do. • But to be alive, the string would have to be made up of CELLS!
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