STEM Fair, Math
Assessment, Scientific
Notation
Chemistry GT 8/26-27/15
S
Drill
S You do not need to write drill this down.
S Fill out “STEM Fair” (1/2 sheet) with information
about your STEM Fair project.
S Please pass your Milk Labs to the front.
S HW:
S Rules for Exponent Math WS
S Get the Parent Letter Confirmation filled out and fill out the
Self-Evaluation and Tech Inventory – both are online at
msbloedorn.weebly.com (if not done already)
Objectives
S IWBAT
S Discuss the timeline for STEM Fair
S Show my current math preparedness
S Convert numbers into and out of scientific notation
S Multiply and divide with scientific notation
Agenda
S Drill
S STEM Fair Info
S Math Preparedness Assessment
S Scientific Notation & Scientific Method
S Precision and Accuracy
S Safety
S Closure
STEM Fair
S I know you all have been collecting data over the
summer… right?
S Data should be ready for analysis by the fourth week
of school (September 15/16)
S If you haven’t gathered data, get to it!
S If you have a question about YOUR project, make an
appointment to see me before or after school. If you do
not have a project (you’ve already spoken with me), I’ll
let you know what to do next week.
Dates
Assignment Timeline 2015-16
Assignment
Due Date A/B
Data Analysis and Graphs
October 15/14
Conclusion
November 19/20
Abstract
December 18/17
Posters and Presentations
January 26/25
Howard High School STEM Fair
TBA
Howard County STEM Fair
TBA
Math Preparedness Assessment
S First, this is NOT a test or quiz
S I need to know where your math skills are, for you to
be successful in Chem GT
S These are all skills you should have, coming in to the
class.
S NO calculators!
S Bring it up when you are done
Scientific Notation
S Turn this into standard notation:
S 2.3 x 104 m
S 8.04 x 10-2 s
S Turn this into Scientific Notation:
S 3,400,000 g
S 0.0032 L
Scientific Notation
S Shall we review the concept?
S Notes!
S Converting
S Multiplying and dividing without a calculator
Scientific Notation
S Let’s practice with some worksheets.
S Scientific Notation/Calculations
Calculations WS Review
1. 5.3 x 108
6. 4 x 108
2. 4.0 x 1014
7. 6.2 x 10-6
3. 2.0 x 104
8. 3.4 x 10-5
4. 2.0 x 101
9. 4.9 x 101
5. 1.5 x 103
10. 5 x 103
Scientific Method Qs?
S What are the steps to the scientific method?
S Any questions about it?
Precision vs Accuracy
S I will draw a target and discuss the diagram.
Precision & Accuracy
S What is precision?
S Precision is how close a series of measurements
are to each other.
S What is accuracy?
S Accuracy is how close a measurement is to a
“standard”. For example, the center of a
bullseye.
Sports Examples
http://blog.affinitymed.com/wpcontent/uploads/2009/06/6-7-09-kobeshooting-in-the-paint-small.jpg
http://i.cdn.turner.com/si/multimedia/photo_gallery/08
08/oly.phelps.sequence/images/opgm-37117-mid.jpg
Accuracy and Precision Lab
S You will work in the same pairs as Monday.
S Now, go into the lab and follow the directions to gather
data for Trial 1 of the Accuracy and Precision Lab.
S All done? Come back to seats and do the calculations
for Trial 1.
S Record your percent error on the board.
Safety
S Let’s watch the safety videos.
S https://www.youtube.com/watch?v=XYbOS
mYme6Y
S We will also do a safety “tour” of the room and
look at the safety contract.
S Do you know what to do for the drills?
S Fire? Duck, cover, and hold? Lockdown?
Closure
S How accurately can one measure using a ruler? Using
a graduated cylinder?
S Is there a formal way to represent this concept?