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SYNOPSIS |
A piece of notched wooden dowling, with a smaller dowling "propellor" at one end, is rubbed with a small stick, which causes the propellor to rotate. On command "Hooey", the propellor stops and reverses direction, "magically". This is an excellent vehicle to address natural illusions and how science can effectively reveal them. |
CONCEPTS |
Science deals only with natural patterns and mechanisms. Understanding science enables one to differentiate it from pseudoscience and non science. |
MATERIALS |
See list of materials and assembly procedures below, following this formatted lesson outline, under The Incredible Magic Hooey Stick. To get a FREE SAMPLE of a working Hooey Stick, see the note near end of the instructions for making The Incredible Magic Hooey Stick. |
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TIME |
15-20 minutes, or entire period, depending on how long you want to go. | ||
STUDENT HANDOUTS |
This lesson may be best introduced after doing some lessons which focus on the real nature of science. It provides an enjoyable "test" to see if your students truly have learned to become more skeptical and critical, and press hard to challenge your "magic", or still tend to readily accept supernatural explanations for seemingly "magical" phenomena.
See "Unfolding Drama" below for details.
Before using any of our Nature of Science lessons, be sure to read our General Background Information, with our Rationale and our Approach, and tips for Presenting the lessons for maximum effect and Dispelling some of the popular myths about science.
EXTENSIONS |
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& VARIATIONS |
COURSE OPENER: This activity could also be used as an attention grabber for your course opener at the beginning of the year, leading into your introduction to the nature of science, before you have discussed the critical, skeptical nature of how science operates, and could serve as an example of how we tend to be drawn to supernatural "magical" explanations for puzzling phenomena (especially if your students do indeed seem to do that!). If they do lean heavily that way, get them to consider OTHER possible explanations for the phenomenon, and how those could be checked out (i.e. "tested").
If your students are generally sekptical that you are really "magical", then congratulate them, and explain that they are showing an essential scientific attiude, and could become not only good scientists, but more critical consumers, and less likely to be conned by charlatans. Continue into lessons which focus on the techniques and other attitudes of science....
The natural world has many illusory phenomena (e.g. the apparent daily movment of the sun across the sky). This lesson is a good springboard to exploring illusions, and the role of science in exposing them. Try the many suggestions for using illusions on this site. Your library also probably has some books on illusions. These are fun to use as "sponge" activities when you have a little extra time... a fun way to remind your students that science is a very efective way to understand the illusions in nature. Try our NEW LESSON in which students INVESTIGATE the CAUSES of ILLUSIONS: "PERCEPTION IS NOT ALWAYS REALITY."
A further fun extension into the realm of illusions is to learn some simple sleight of hand "magic", or use some magic shop gimmicks, to insert as appropriate throughout your course (e.g. make a coin disappear when introducing laws of probability in genetics, or work with cards or dice in the same way). See resources below.
PROMOTE SKEPTICISM: Whenever you present something seemingly magical or "supernatural", train your students to shout out "TRICKERY" all together. For example, after you show them the Magic Hooey Stick, with as much flair and aura of mysticism as you can muster, if nobody raises any doubts or challenges its magic, ask them "Is there anyone who suspects that this might not be magic, but rather has some natural or physical explanation? Does anyone suspect 'trickery'?" When you get some agreement, tell them "Well, I should hope so! Good scientists are always skeptics. Whenever you see something (at least in this class) that is presented as mystical or supernatural, I want you all together to shout out 'TRICKERY!' Got it? Good. Let's do it: 1,2,3, TRICKERY! Very good. Don't forget, now. Then, we'll explore the phenomenon further." It's good to reinforce this with one or two additional examples of "magic", or discrepant events, so they can practice shouting "TRICKERY!"
If they ask what a skeptic or skepticism is, explain that skeptics try to hold an open, provisional approach to the explanations for unusual phenomena. They realize that the world holds many natural illusions. They challenge mystical or supernatural explanations with close observation and reasoned logic, because 1) such "explanations" do not really provide any details, and 2) such explanations, upon closer scrutiny, usually turn out to be false, and are replaced with ones that fit known natural laws. Good scientists always assume natural explanations are working, and test them by trying to disprove them. If they survive the challenge, they are stronger for it. Remember the dictum: "Extraordinary claims require extraordinary evidence."
1. Video: NOVA, Secrets of the Psychics (Magician and McArthur Fellowship winner James Randi explores the claims of psychics and puts them to scientific tests) 60 min. (1993).
2. Video: Galileo: The Challenge of Reason. (The Shaping of the Western World Series:) Outstanding video productions recreate the human drama and spectacle of history. These productions are of feature film caliber, starring well-known actors and filmed in actual historical locations around the globe. Scholars from the world's greatest universities acted as consultants). 30 min. (1978) $59 from Coronet/MTI, 800-221-1274.
3. Some Classroom Magic Resources.....recommended by Walter Wogee (ENSI '93):
**Magic and Showmanship for Teachers by Alan McCormack
published by the Idea Factory. This is the best overall source
of ideas for using magic in the classroom. I think that it is
available through the NSTA Book Store, or Amazon.com (currently
$15.50).
**Mathemagics by Arthur Benjamin and Michael Shermer is
a good source of magic effects based on math.
**Fun with Science Magic and Fun with Math Magic
is a series of books by Donald W. McCarthy published by University
Classics. I am not sure if they are still available.
** Wonder Workers by Joe Nickell is a good source of explanations
of logical explanations of magic and paranormal events for students.
** There is a Magic for Dummies book and a Magic for
Idiots book out that are good introductory magic books.
** The NOVA video, Secrets of the Psychics with James
Randi is a great video to use.
** The Scientific American Frontiers Video with Alan Alda
on Paranormal and Pseudoscience is also good.
** CSICOP video, Beyond Belief is good if it is still
available.
ATTRIBUTIONSSome of the ideas in this lesson may have been adapted from earlier, unacknowledged sources without our knowledge. If the reader believes this to be the case, please let us know, and appropriate corrections will be made. Thanks. |
1. Original Source: John Banister-Marx (ENSI 1994) 2. Reviewed / Edited by: Martin Nickels, Craig Nelson, Jean Beard 3. Edited / Revised for website by L. Flammer 3/99; Revised 3/01 |
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- 3 Pages of instructions
- 1 Formatted Letter
- 1 Student Worksheet
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