South Carolina ETV

South Carolina ETV
1101 George Rogers Boulevard
Columbia, SC 29201-4761
Phone: 803-737-3545

Highways of Life (Grade 5-8)

Master Teacher

Carlette C. Troy

Time Allotment

Three 50-minute class periods

Overview

The circulatory system is the body system made up of the heart, blood, and blood vessels. This system transports blood throughout the whole body.

The job of the circulatory system is to supply needed materials, such as oxygen and food to every cell in the body and to remove waste. This is accomplished through the blood.

The heart is a hollow muscle. It's about the size of a fist. It weighs about nine or ten ounces. The heart is located in the center of the chest between the lungs. The heart consists of four chambers-two thin-walled atria and two powerful, muscled ventricles. The pumping action of your heart moves blood throughout your body.

Blood travels in tubes called blood vessels. There are three kinds of blood vessels: arteries, veins, and capillaries. The arteries carry blood, rich with oxygen and nutrients away from the heart. Veins carry blood back to the heart for fresh oxygen from the lungs. Veins are thinner than arteries. Capillaries are even smaller. Capillaries are tiny blood vessels that carry blood between the smallest arteries and the smallest veins.

Blood is made up of red cells, white cells, platelets, and plasma. Red blood cells are disc shaped and carry oxygen to all parts of your body. The white blood cells fight disease. Platelets are important in blood clotting. About 55 percent of blood is plasma. Plasma is the fluid part of the blood. It is yellowish and about 90 percent water. You have about nine pints of blood in your body.

Subject Matter

Life Science

Learning Objectives

Students will be able to:

Identify the components of blood;
Recognize that blood plays an important role in the body;
Identify the parts of the human circulatory system;
Recognize and define key vocabulary terms.

South Carolina Standards

Visit the SC Standards Web site

Grade 5 II A 2b-c

Label the parts and distinguish among the functions of the major organs of the circulatory system, including the heart, arteries, veins, capillaries, and blood cells.

Media Components

Video

Our Human Body, Lesson 1: "What Is Blood?"

Web Site

Enchanted Learning - Students will learn how blood flows through the heart.

Optional Web Sites

The Nova and Brain Pop sites can be used for student extra credit or to explore this topic further.

Nova - This is a fun Web site that allows students to experience a heart operation.

Brain Pop - This is a short movie about blood. An interactive quiz can be taken before and after the movie.

Materials

1 empty one-pint milk container
1 bucket (5 quarts or larger)
Activity Sheets

Equipment

AverKey
television
VCR
computer with Internet access

Prep for Teachers

Prior to teaching the lesson, bookmark the Web sites used in this lesson on each computer in your lab or classroom.
Familiarize yourself with the pause and skip features on Brainpop.com. (You can only show the video twice without membership.)
Make copies of the Activity Sheets for each student.
Create a KWL Chart.
When using media, provide students with a Focus for Media Interaction, a specific task to complete and/or information to identify during or after viewing of video segments, Web sites, or other multimedia elements.

Introductory Activity

Step 1: Begin by asking students how much blood they think is in their bodies. Accept all answers.

Step 2: Show your students a one-pint milk carton. Explain that an average person's body contains nearly nine pints of blood. Demonstrate how much blood that is by filling up the pint container with water and dumping it into the bucket nine times.

Step 3: Ask students to volunteer information about how blood circulates through the body. Record students' responses on a KWL Chart.

Learning Activities (Day 1)

Step 1: Provide students with a Focus for Media Interaction by asking them as they watch the video to record answers to the questions on Activity Sheet 1. (Distribute Activity Sheet 1).

Step 2: START the clip when you see the words-The Basics of Blood. The commentator will be saying, "All vertebrae animals." STOP the video when you see SCI-FAC Question.

Step 3: Discuss questions 1 and 2.

Step 4: FAST FORWARD and START the clip when you see the words-Jobs of Blood. STOP the video when you see the SCI-FAC question.

Step 5: Discuss question 3. (Note to Teacher: If the students cannot answer the questions, rewind the segment and play it again.)

Step 6: FAST FORWARD and START the video when you see the words-Human Blood. The commentator will be saying, "Seems like it would take a lot of blood to keep me warm." STOP the video when the commentator says-".clotting another important job of blood."

Step 7: Discuss question 4.

Learning Activities (Day 2)

Step 1: Go to Enchanted Learning. Print out a copy of the heart for students to use as their Focus for Media Interaction.

Step 2: Tell students they are going to learn how blood flows through the heart and then label the parts of the heart.

Step 3: Have students go to The Heart Diagram Web page and use the heart worksheet (Step 1).

Culminating Activity (Day 3)

Step 1: Tell students they are going to create a model of the circulatory system. Distribute Activity Sheet 2.

Assessment

Have students complete Activity Sheet 3.

Cross-Curricular Extensions

Reading: Go to http://www.teach-nology.com and click on Free Worksheets. Next click on the Science section and go to the Human Body. Click on Reading Comprehension and makes copies of the worksheet for students to use in class.

Writing: Go to http://www.teach-nology.com. Click on Free Worksheets and then click on Science section. Go to Human Body section and look for "If I was_____" Worksheet Human Body. Chose any part of the Circulatory System to write about. (Make copies for students to use in class)

Language Arts: Have each student prepare a short written or oral report about the following topics.

Cardiovascular Diseases

Arteriosclerosis
Stroke
Hypertension

Blood Diseases

Anemia
Sickle Cell Anemia
Leukemia

Community Connections

Invite a speaker from the American Heart Association to talk about what can be done to reduce death and disability from heart and blood vessel disease.
Invite your school nurse to discuss how to live a healthy life style.

Student Materials

1 human body outline
heart and lung outline
red yard
blue yarn
crayons or markers
scissors
glue