MEASUREMENT 
PHYSICAL SCIENCES – MEASUREMENT LESSON 1. Numbers and Measurement
Objective:
Students learn
the importance of mathematical symbols.
Materials: worksheet
Math Skills:
Slideshow
(flash): The Reason for Numbers
Teacher Notes:
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
(14711528), 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.
ANSWERS:
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
Part II.
