Literature Connection:
Germs Make Me Sick by Melvin Berger
Mathematical Strand:
Number and Operation
Topic:
Patterns, doubling sequence of the power of two
Grade Level:
46
Lesson Created by:
Karen Franz, Woodrow Wilson Elementary, Manhattan, KS
Lesson Description:
Materials:
 calculator, Germs Make Me Sick by Melvin Berger or "Reading Rainbow" video: Germs Make Me Sick
1. Launching the Lesson
 Read the story or watch the video
 Talk about how long it takes for bacteria to multiply (20 minutes for some fast growing ones).
2. Developing the Lesson
 Pose the question: If you would have only one bad bacteria enter your body, how long do you think it would take for it to multiply into 1 million bacteria? Have students estimate the time.
 Demonstrate the doubling sequence of the power of 2, both with pencil and paper, and with a calculator.
 Have students work in pairs, first doubling each number with pencil and paper, and checking it with a calculator.
 Record the data, using a T chart.
3. Closure/Discussion/Elaboration
 After students understand the concept of doubling, introduce a new problem, using a different unit of measurement.
Sample: Paul Bunyan found a one foot snake that would triple its
length every hour. How long would the snake be after one day?
 Can you convert the feet to miles?
 Encourage students to make their own questions.
