Date

- Friday, January 12th

Class Business

- Fall Semester Final Exam commentary
- Questions about grades?

Activity Recap

- Comments about measurement?
- What was challenging about acvtivity?

New Idea – Terms

- Precision
- Accuracy
- Error
- Uncertainty
- (you can LOOK IT UP!)

New Idea – Measurement & Significant Figures

- all measurements contain uncertainty
- all numbers are measurements
- so how do we deal with this?
- SIGNIFICANT FIGURES
- all certain digits and one good guess
- YES, all numbers contain a GUESS
- Hint: scientific notation helps!

Examples

- Chapter 2 Paired Exercises (5 – 12)

Homework

- Finish textbook work
- NOTE: pencil on paper, space work
- SHOW: given info and some indication of process
- DO NOT just write the answer

%d bloggers like this: