Chapter 1 Lesson 1

Living Things are Made of Cells

Materials:

• Several Microscopes set up with cell slides or the Pictures of different cells displayed in front of the room or on Distance delivery equipment.
• Colored pencils, crayons, or markers and a blank piece of paper.

Objective:

• Students will be able to describe a cell and explain some of its functions.
• Students will explain what tissues are.
• Students will explain what organs are and how they relate to tissues and cells.

Alaska Standards:

• A-10, A student will understand that living things are made up mostly of cells and that all life processes occur in cells.
• A-12, A student will distinguish the patterns of similarity and difference in the living world.

Anticipatory Set:

Students will either draw independently or assist the instructor in drawing a cell. Students will any parts they can remember from previous course work. The teacher will lead a discussion about their drawings. What is a cell?

A cell is the basic unit of life.

Teacher Input:

Teacher will introduce an organism that is made up of only one cell. The teacher will show different types of bacteria and make sure the student know that bacteria is the simplest single cells that carry out all basic life activities.

How did we get these pictures of bacteria? Have the students lead the instructor through a discussion of the microscope.

Teacher Modeling:

The teacher will point out that in most organisms there are many different types of cells. In the students bodies their are several different types of specialized cells. Students will develop a list of five main cell types and their function. (Page2) Use some of the pictures at the bottom of the page for help.

Students will then discuss the organization of living things. Lead the students through a discussion that points out this organization:

• Cells are made of tiny structures called organelles.
• Tissues are made of groups of cells that are similar and work together.
• Organs are made of different tissues that work together. (Mention the following but do not emphasis it will be covered later and we don't want to overload the students.)
• Organ systems are made of different types of organs working to perform a task for the organism.
• Different organ systems form an organism.
• many organisms of the same type form a population
• many populations form a community.
• the community combined with the nonliving parts in a community form the ecosystem.

Check for Understanding:

Students will discuss the following questions:

1. What are cells?
2. What are the functions of cells?
3. What are tissues made of?
4. What are organs made of?
5. Name four organs?

Guided Practice:

The students will be given photos of different types of cells below and name the type and function when it is displayed.

Closure:

Starting with the term organism students will break it down into its smaller and smaller pieces. (Organism, organ system, organ, tissue, cell, organelle.)

Independent Practice:

Students will take the quiz on Chapter 1 lesson 1. Students will be given time to look for different types of cells on the Internet. There are about 200 different types of cells in the human body. The class that can name the most will get a challenge point. Remember the class with the most challenge points at the end of the quarter will get the answers to their final test of the quarter.

Duration:

30 minutes + 10-15 for Independent Practice (Could be longer if taken for homework).

Pictures of Cells

Blood cells	Nerve Cell	Skin cells
Cheek Cells (skin cells)	Bone Cells	Human muscle cells