The Immune System: Your Body's Best Defense

Black and white illustration of starfish battling sea creatures with a sword and shield

Audience

This lesson is designed for campers who are at about a middle school reading level and who can find and follow the instructions and links in a specific Web site. The site used in the lesson includes information that is appropriate for this audience, as well as for more advanced students. Although some of the vocabulary is complex, the author, Dr. Kadar, provides helpful definitions for most terms.

Objectives

When campers have finished this lesson, they will be able to list the immune system's three types of defense responses, and provide examples for each response. Campers will also be able to apply what they've learned as they think about how different diseases affect the body.

Web Site

Dr. Avraham Kadar's Immunology Home Page
http://www.cloud9.net/~thekads

Presentation

Limit lecture time to allow campers time to practice, explore, and learn at their own pace. The topic of this lesson is a good one to use for discussion. Your campers may find in this activity a good opportunity to bring up questions about illness and disease.

Here is one way you can organize this lesson:

  • Present a captivating introduction to the lesson. Ask, "What is the purpose of your body's immune system? What happens if your immune system doesn't work well?"
  • Provide an overview of today's activity.
  • Distribute activity sheet and facilitate today's activity.
  • Start an e-mail discussion on today's topic.
  • Summarize and discuss what was learned.

Activity Worksheet: The Immune System: Your Body's Best Defense

Name(s):_____________________________________

Today you'll explore a great place to learn doctor lingo. Not only will you pick up some impressive ER vocabulary, but you will actually learn what the words mean. Your parents will be so proud. Using the Web site called Dr. Avraham Kadar's Immunology Home Page you'll learn how your body reacts to foreign particles like viruses and illnesses. The following steps will lead you through today's activity.

  1. Use your Web browser to access the home page at the URL below:
    www.cloud9net/~thekads
     
  2. Read information provided at this site to answer the following questions.

    How many defense responses does your body have?

    Name the types and give examples of each.

    What part of the immune system is the "key fighter of foreign particles?"

    What is a leukocyte?

    Why are leukocytes important?
     
  3. Click on one type of leukocyte, follow the link, and write a paragraph on the back of this sheet describing how that particular cell works. You may need to follow several links to get all the information you need to write this paragraph. Now that you've learned more than you thought you could about some complicated immune responses, think of related issues to talk about.