Tgif Math
By Jim Elander
()
About this ebook
An important part of becoming a CRITICAL THINKER, or a valid DECISION MAKER, besides asking questions, is to recognize words that need defining, and that all decisions are based on definitions, assumptions, and previous accepted rules or laws.
All people are eager to be THINKERS, but that ability is not a gift, it is learned, practiced and even forgotten. These activities will review some of the types and methods first encountered in geometry and some problems that are similar to the ones on the SAT, ACT and other entrance exams.
In the March 2010 issue of School Science and Mathematics, it was pointed out the two major weaknesses in college freshmen are in geometry and Critical Thinking, hence these 98 activities are involving direct and indirect thinking skills, forms of implications and other types all designed to convert those difficult special days into unique learning fun days.
These activities are designed for students (working in small groups) to create the learning situations by doing them with the teacher guidance assisting them to the conclusions.
Many of my former students commented that what they enjoyed and learned from the classes, more than anything else, was activities like these, hence, my reason to share some of these with other teachers.
Jim Elander
Jim Elander, after using the WW 2 GI Bill to attend college, began his teaching career in a small school where he taught all the math and also physics and chemistry. He learned a lot! Then earned his masters in Mathematics and taught one year in a larger school before going to Purdue as a General Electric Fellow for more Math. His next school, 2500 – 4300 students, which was really a college prep public school. (Oak Park and River Forest High School, Oak Park, IL) A school that expected much from the students and faculty. During the 26 years at Oak Park, he was president of two professional organizations, served on many North Central Evaluation teams, and three National Science Foundation programs. Besides being a Department Chair, he also served on the MAA- IL section Geometry committee. In 1990 his first geometry book was published. This is his second innovated geometry program that correlates decision-making skills with geometry. His final teaching position was at North Central College in the 80s before retiring. The objective for these activities is give teachers some ideas and ways to make the hectic days before holidays or other special days better learning experiences.
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Tgif Math - Jim Elander
Copyright © 2013 by Jim Elander.
All rights reserved. No part of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage and retrieval system, without permission in writing from the copyright owner.
Rev. date: 09/11/2013
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TABLE OF CONTENTS
3.JPGA. Rodin’s, THE THINKER, Golden State Park, San Francisco, CA
Why For The Teacher?
Prologue
Chapter 1. Statements are true or false, Conclusions are Valid or Invalid?
Activity 1. Predictions may be Wrong!
Activity 2. One Sided Paper or the Mobius Belt
Activity 3. Taxicab Geometry
Activity 4. Polygon Angle Sum
Activity 5. Curves from Straight Lines
Activity 6. What do you see? Illusions
Activity 7. More Illusions
Activity 8. Teen or Sr. Citizen
Activity 9. What do you see in the following pictures?
Activity 10. How many times can a piece of paper be folded in half?
Activity 11. Looking for the easy way
Activity 12. Why cars and boats tip over!
Activity 13. All circles have the same measure for the circumference. Your kidding!
Activity 14. FedEx Logo
Chapter 2. Number Theory—Algebra—Reasoning Activities Potpourri
Activity 1: Which areas of study are important for the future?
Activity 2: This problem will tell the student if their answer is correct.
Activity 3: How to become a millionaire in 30 days.
Activity 4. How large is the college class?
Activity 5. How many of each were purchased?
Activity 6. What number?
Activity 7. Dad, please send money!
Activity 8. Clock Arithmetic
Activity 9.=0?? How can this be?
Activity 10. Average speed (SAT or ACT question)
Activity 11. Summer pay
Activity 12. Diagonal of a 4th dimensional cube from a mathematical viewpoint.
Activity 13. How many lanes is the coach planning for?
Activity 14. Saturday’s pay
Chapter 3. Inductive Reasoning conclusions and related Problems
Activity 1. Preamble
Activity 2. Inductive reasoning
Activity 3. Points and Lines
Activity 4. Taxicab Geometry
Activity 5. N-gon and diagonals
Activity 6. The Tower of Hanior
Activity 7. Coin Problem
Activity 8. Cook’s problem:
Activity 9. Given 4 fours (4,4,4,4) try to write the first 20 counting numbers using any operations or combination of symbols.
Activity 10. All of your students have played checkers
(an assumption) so here is the problem.
Activity 11. The game of Sprouts
Activity 12. What is wrong with this conclusion?
Activity 13. Interesting quotients
Activity 14. The Way Out.
Chapter 4. Thinking and Reasoning Activities
Activity 1. The Declaration of Independence
Activity 2: The President’s Advisors
Activity 3. The Cell Phone Problem?
Activity 4. Galileo and Gravity
Activity 5. A new type of number
Activity 6. Questionable Request and Ads
Activity 7. Implications and forms of Implications
Activity 8. Ads and implications
Activity 9. The sum of the first N counting numbers
Activity 10. John’s Walk
Activity 11. Stack Problem
Activity 12. One-sided paper or the Mobius Belt
Activity 13. Who was guilty? (Indirect reasoning concept
is very important.)
Activity 14. Text Message
Activity 15. Magic Square
Activity 16. Who did it?
Activity 17. Clock arithmetic.
Activity 18. The eye deceives you.
Activity 19. Proof that 2 equals 1 or does it?
Activity 20. Trip problem
Activity 21. Activity for the day before a Federal Holiday.
Activity 22. How many triangles?
Activity 23. Early out
Activity 24. Highest score
Activity 25. Summer jobs
Activity 26. A weight problem, but a good buy!
Activity 27. Ad Interpretation
Activity 28. = 0 and or ∞ = 0????
Activity 29. Easy Test
Activity 30. The Binary System
Activity 31. House and Dogs
Activity 32. The Sad Romance of Miss Gon
Activity 33. Interesting conclusions
Activity 34. Sums, the easy way
Activity 35. A Valentines Day Activity
Chapter 5 . Additional Selected Activities for TGIF MATH Review
Bibliography
Quotes
* Ronan’s The Thinker at Golden State Park in San Francisco, CA
WHY FOR THE TEACHER?
A set of Activities designed to improve your students SAT, ACT and other college or vocational school entrance exam scores, and more importantly your Decision Making Skills. Research has indicated that EVERYDAY CRITICAL THINKING SKILLS has scored the lowest on these tests. This program reviews and explains these skills and also incorporates some basic and new understandings relative to Decision Making Skills for everyday situations. Students’ scores will go up!
The following statement was over the entryway to Plato’s Academy.
LET NO MAN IGNORANT OF GEOMETRY ENTER HERE
Plato’s statement reflects how important he felt Geometry was to everyday Decision Making and indicates why schools want students to have Geometry. (Geometry taught correctly will improve Decision Making skills. Plato knew this and Fawcett justified it in the 1930s (13th yearbook of the NCTM, NATURE OF PROOF). It is also suggested you read chapter 14 in Polya’s MATHEMATICAL DISCOVERY-Vol.2 as to a method. This set of activities which you (the teacher) will carefully select from to fit the needs of your students, will prove beneficial and informative.
3.JPGRodin’s THE THINKER (Golden Gate Park, San Francisco, CA)
Logical decisions are based on, undefined terms, defined terms, postulates, inverses, converses, contrapositives, using direct and indirect justifications, plus understanding their use and misuse. Keep in mind statements are truth or false and conclusions are valid or invalid.
These Activities are the result of listening to family, professional colleagues, and hundreds of students asking questions, making comments, and completing similar Activities. These class periods on special days will become learning days and looked forward to by you and your students.
May the joy of teaching be yours.
Jim Elander, retired, but still recalls the joyful teaching days.
Advisor: Olaf Elander
Three other CDs by the author:
EVERYDAY DECISION MAKING