Biorhythms Lesson Plan

Instructor: John Hamilton

John has tutored algebra and SAT Prep and has a B.A. degree with a major in psychology and a minor in mathematics from Christopher Newport University.

You can educate your students about biorhythms with this helpful lesson plan. They will study a text lesson, take a related quiz about biorhythms, and also participate in a fun hands-on activity that will help to reinforce newly learned concepts.

Learning Objectives

After studying this lesson about biorhythms your students will be able to:

  • Define the term biorhythm and explain the main cycles
  • Review the history of biorhythms from the late 19th century
  • Know the formula used to calculate biorhythms


1 - 1.5 Hours


Curriculum Standards


Cite specific textual evidence to support analysis of science and technical texts, attending to the precise details of explanations or descriptions.


Determine the central ideas or conclusions of a text; trace the text's explanation or depiction of a complex process, phenomenon, or concept; provide an accurate summary of the text.


  • Let your students know they are going to be studying the interesting but somewhat controversial topic of biorhythms.
  • Ask them if they are familiar with biorhythms or have even calculated their own biorhythms previously.
  • Pass out copies of the text lesson Biorhythms: Definition, History & Calculation.
  • Read the introduction and the first section titled 'Biorhythm Defined.' Ask your students the following:
    • What methods have people used to try and predict the future?
    • How do science and pseudoscience differ? Into which category does the study of biorhythms fall?
    • When did the study of biorhythms originate and when did it become popular?
    • On what is the concept of biorhythms based?
    • How are math formulas used in biorhythms, and what are highs and lows called?
    • What are the three main biorhythm cycles, and what are three other cycles?
    • How are the three main cycles broken into periods?
  • Now read the section 'History.' Go over the following questions with your class:
    • Who was Wilhelm Fliess and what did he conclude about biorhythms?
    • Who was the famous psychiatrist who was a friend of Wilhelm Fliess?
    • How did three other scientists contribute to the field of biorhythms?
    • Are most of the biorhythm studies in scientific journals considered valid?
  • Next read the section 'Formulas and Calculation.' Then go over the following questions:
    • Which waves are utilized for calculating biorhythms, and what type of curves are they?
    • How do the three formulas differ?
    • How is the midline on a biorhythm graph so important in determining the type of days a person will have?
  • Finally, read the section 'Lesson Summary' and then review the text lesson in its entirety.
  • Have the students take the lesson quiz so you may determine if they have grasped the new material.

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