<font color=white>.

  1. Home
  2. <b><i>Professional Information
  3. <b><i>Course Work
  4. <b><i>Field Experience
  5. <b><i>Educational Links
  1. Child Development
    1. PowerPoint
    2. Philosophy of Child Development
  2. Children's Literature
    1. Read-Aloud
    2. Children's Literature Timeline
    3. Multicultural Newsletter
    4. Special Features Handout
    5. Literature Lesson Plan
    6. Literary Analysis
    7. Service Learning Final Reflection Paper
    8. Children's Literature Philosophy
  3. Classroom Management
    1. Theorist Presentation
      1. Handout
      2. PowerPoint
      3. References
      4. Activity
        1. Direction Sheet
    2. Classroom Management Philosophy
    3. Service Learning Final Reflection
    4. Reader Response
    5. Parent Newsletter
    6. Classroom Rules
    7. Getting Students Involved in Writing the Rules
    8. Managing Teacher Stress
    9. Classroom Layout
    10. Classroom Slogan and Logo
  4. Computer Courses
    1. Computer Science
      1. WebQuest
        1. <b><big><font color=navy>Teacher Page</b></big></font color=navy>
        2. <b><big><font color=navy>Images</b></big></font color=navy>
      2. Reader Response
      3. Service Learning Final Reflection
      4. Philosophy
    2. PowerPoint
    3. Internet/Web
    4. Windows XP
      1. Reader Response
      2. Resource Manual
    5. Desktop Publishing
      1. Newsletter
      2. Tri-fold Flyer
      3. E-mail Letter
      4. Web Home Page
      5. Philosophy of Technology
      6. Arizona WebQuest
        1. <b><font color=red>Teacher Page
        2. <b><font color=red>Images
  5. Cultural Diversity
    1. Critical Analysis
    2. Teaching Strategy
    3. Research Assignment
      1. PowerPoint Presentation
      2. Activity
      3. Brochure
      4. Research Paper
        1. References
    4. Final Reflection
    5. Calendar
    6. Philosophy
  6. Educational Psychology
    1. Observation Paper
    2. Analysis Paper
    3. Creativity Presentation
      1. Creativity Handout
      2. References
      3. PowerPoint
    4. Interview Questions
  7. Honors
    1. Cultural Diversity
    2. Computer Science for Education Majors
    3. Desktop Publishing
  8. Introduction to Education
    1. Critical Analysis
    2. Final Reflection
      1. PowerPoint
    3. Research Paper
      1. PowerPoint
    4. Pro/Con Issue
      1. PowerPoint
    5. Philosophy of Teaching
  9. Methods Mathematics for Elementary Teachers
    1. Educational Links
    2. Internet Lessons
      1. Kindergarten
      2. Grades 1-3
        1. Section One
        2. Section Two
        3. Section Three
        4. Section Four
        5. References
      3. Grades 4-5
      4. Grades 6-8
    3. My Math Experiences
    4. Book Presentation
      1. The Book
      2. The Activity
    5. Math Activities using Concrete Objects
      1. Magic Number Tricks
      2. The Boat and the Shark
    6. Math Philosophy
    7. Integers and Number Theory Quiz
  10. Methods Mathematics for Elementary Teachers II
    1. Intermediate Level Lesson Plan
    2. Data Analysis/Statistics Quiz
    3. Math Activity Ideas
      1. Measurement Activity
      2. Geometry Activity
      3. Probability Activity
    4. Square Construction
    5. Math Philosophy

Magic Number Tricks

wand.JPG

Magic Number Tricks

Purpose: Translate verbal phrases into algebraic expressions

Materials: Calculator

Grouping: Work Individually

Activity:

Dr. Wonderful, the Mathematical Magician, astounds crowds with his amazing ability to read people's minds. Here are the directions that he gives to five people in the crowd. Follow Dr. Wonderful's directions and complete the table below. Choose a different number for each person.

Person (5):

  1. Pick any number
  2. Multiply by 3
  3. Add 30
  4. Divide by 3
  5. Subtract your original number

Dr. Wonderful tells the people to write their answers on a sheet of paper but not reveal them to anyone else. He closes his eyes, concentrates deeply, and then claims that he knows each person's answer.

Let n be the number. Write an algebraic expression and record the result for each step above.

Step 1:

Step 2:

Step 3:

Step 4:

Step 5:

The result is ______.

Comments: Have the students discover that the result is always the number 10.

 

Picture: http://www.rmhccolumbia.org/Graphics/Images/Magic%20Wand.gif
Author: heidi farrelly
Last modified: 8/25/2005 4:27 PM (EST)