PHYSICAL SCIENCES – MEASUREMENT
LESSON 1. Numbers and Measurement
Objective: Students learn the importance of mathematical symbols.
Math Skills:Slideshow (flash): The Reason for Numbers
Slideshow script: The Reason for Numbers
Numbers are important to mathematics and science. Students may take the beauty of numbers for granted, not realizing how difficult it was to develop practical symbols for expressing quantity.
You may want to introduce the idea of the “magic” of math by using a Magic Square to start a discussion. We recommend the famous Magic Square used in a painting by Albrecht Durer (1471-1528), a German painter and printmaker during the Renaissance. The magic squares all add up to 34 whether you add rows, columns, diagonals or corners.
If students have not learned some of these philosophies in the readings, you might want to extend discussions. It is very important for students to understand these skills and the difficulties to develop them.
Part I. 1. rational; 2. rational; 3. irrational; 4. irrational; 5. rational; 6. rational; 7. irrational
Rational can be expressed as a fraction or ratio; irrational cannot be expressed as a fraction