1. current 8/29/08
Welcome to SCIE 0910

2. Why do we study science? Need a basic understanding of science
current 8/29/08
Need a basic understanding of science
Difference between science and technology
Science = process to understand and explain the natural world
Technology = application of scientific principles
Helps us to make informed decisions
Using the Scientific Method to approach a problem and find a reasonable solution.

3. To be successful in the study of science; you must….
Identify and locate information to be learned
Organize the information so it can be learned efficiently and effectively
Interpret the spoken, written and symbolic language of science
Use and apply the information you have learned.

4. The Learning Pyramid Lecture Study Sessions Lecture Lecture & Lab
current 8/29/08
Lecture
Listen
Study Sessions
Read
Lecture
Audiovisual
Lecture & Lab
Demonstration
Study Sessions
Discussion group
Lab
Practice by doing
Study
Sessions
Teach others or immediate use
Lab

5. current 8/29/08
Why SCIE 0910?
To introduce you to skills that will make you more successful in future science classes
Chemistry
Biology
Physics

6. Review of Math Principles
current 8/29/08
Review of Math Principles

7. Addition Sum of 2 or more numbers called addends 2 + 4 = 4 + 2
current 8/29/08
Addition
Sum of 2 or more numbers called addends
2 + 4 = 4 + 2

8. current 8/29/08
Addition of numbers w/different signs (a good understanding is needed when we work with numbers expressed in Scientific Notation)
4 + 2 = 6
-4 + (- 2)= -6
= -2

9. Combine numbers w/same sign
current 8/29/08
Combine numbers w/same sign
4 + (-5) + (-3) + 7 +(-9) =
(-5) + (-3) + (-9) = -17
= 11
Finish the problem:
= OR (-17) = -6

10. current 8/29/08
Subtraction
4 – (-2) =
4 + 2 = 6
4 – (+2) =
4 -2 = 2

11. current 8/29/08
-4 – (+2) =
-4 – 2 = -6
-4 – (-2) = -2
= -2

12. 8 x 4 = 32 (positives) (-6) x (-3) = 18 (-2) x 4 = -8 Multiplying
current 8/29/08
Multiplying
8 x 4 = 32 (positives)
(-6) x (-3) = 18
(negative x negative = positive)
(-2) x 4 = -8
negative x positive = negative

13. (-2) x 5 x (-3) x 4 = (-2 x 5) x (-3) x 4 = (-10) x (-3) x 4 =
current 8/29/08
More than one number
(-2) x 5 x (-3) x 4 =
(-2 x 5) x (-3) x 4 =
(-10) x (-3) x 4 =
(-10) x (-12) = 120

14. current 8/29/08
4 x 3 x 7 x (-3) =
12 x 7 x (-3) =
12 x (-21) = - 252

15. Dividing Signed Numbers
current 8/29/08
Dividing Signed Numbers
16 ÷ 2 = 8
(-64) ÷ (-8) = 8
Same signs = positive answer

16. different signs = negative answer
current 8/29/08
210 ÷ (-42) = -5
(-77) ÷ 11 = -7
different signs = negative answer

17. Fractions Way of representing the division of a “whole” into “parts” 1
current 8/29/08
Fractions
Way of representing the division of a “whole” into “parts” 1 2
The numerator expresses how many “parts”
The denominator expresses the total number of parts.
numerator
denominator

18. Proper Fraction A proper fraction has a value less than one
The numerator is smaller than the denominator.

19. Properties of Fractions
Value of a fraction is not altered if numerator and denominator are multiplied
Or divided

20. Multiplying Fractions
current 8/29/08
Multiplying Fractions
By a whole number: 2 3
2 X 6
3 X 1 12 3 4 = = 6 = X

21. Multiplying Fractions
current 8/29/08
Multiplying Fractions
By another fraction: x x X = = =

22. current 8/29/08
Dividing Fractions 1 1 ÷ = 2 4
becomes 4 1 x = 2 2 1

23. Adding Fractions 1 + 1 = 2 which reduces to 1 2 2 2
current 8/29/08
Adding Fractions
Need to be equivalent fractions to add correctly
Numerators are added
Denominators stay the same
= 2 which reduces to 1

24. Adding Fractions Denominator must be the same
current 8/29/08
Adding Fractions
Denominator must be the same
Usually is the least common denominator
(LCD)
Change to equivalent fractions
EX:
½ + ¼ =
2 2
2 4 = X = + =

25. Subtracting – same rules as for addition
current 8/29/08
Subtracting – same rules as for addition
1/3 – 1/4 =
Determine LCD:
1/3 x 4/4 = 4/12
1/4 x 3/3 = 3/12
Answer:
4/ /12 = 1/12