TuesdayAugust 28, 2012
(Lab Safety Rules, Laboratory Classroom Scavenger Hunt; Flinn
Scientific's Student Safety Contract)
Please pick up a Flinn Scientific's Student Safety Contract, proceed to your
desk, and begin reading this form.
Bell Ringer Tuesday, 8-28-12
Announcements• Please remember that we will
have our first Quiz on Friday.• Please have your science journal
by Thursday.
Assignment Currently Open
Summative or
Formative?Date
Issued Date Due Date Into GradeSpeed
Final Day
ESS Class Information Sheet F 8/27 8/28
ESS Class Procedures and
ExpectationsF 8/27 8/29
VideoWorkshop Safety:
Chemistry LaboratoryPlay
DiscussionWhat is an acceptable safety goal for your
chemistry laboratory?For instance, would a 90% safety ratio be
acceptable? I need to set a goal for the percent of my students that will avoid a serious accident
during my teaching career.What do you think is an acceptable or
realistic percentage?Here’s some math as it applies to my
schedule:
Discussion
On average, I have had 5 chemistry classes per day.I have an average of 24 students per class.
When I retire, I will have taught chemistry for 20 years.So, the total number of students taught in a career would be:
5 x 24 x 20 = 2400 studentsWhat do you think would be an acceptable safety goal for my career, as a
percent of student that would leave my class at the end of the year without being injured? Discuss this in your SLC.
In my chemistry-teaching career, if just 1 student got seriously injured in my lab, my safety percentage would be:
2399 / 2400 = 99.967 % That is very good unless…
… you are that one student who was seriously injured!Let’s translate your answers into the actual number of students that
would be seriously hurt (eye damage, burns, etc.) in my lab.For example, if you said an acceptable safety goal would be 95%:
1.00 – .95 = 0.05 x 2400 = 120 students seriously injuredIs this an acceptable safety goal?
What is the only acceptable safety goal?
100%.
Discussion
Let’s come up with some rules that must be followed when we’re conducting laboratory
investigations in this classroom?
In your SLC, please write down five safety rules and be prepared
to share with the class.
Activity
Everyone get a copy of the Laboratory Classroom Scavenger Hunt form.
You have 10 minutes to walk around the room with the members of your SLC and fill in the
handout about the safety equipment in the lab.
After 10 minutes, return to your seats.
Which groups found at least 4 things on their hunt?
Which groups found at least 7 things on their hunt?
Any volunteers to discuss one piece of equipment and show us where it is located in the lab?
Wrap Up
Please turn in your SLC group’s safety rules.
Everyone: please turn in your scavenger hunt
forms.
Homework
Flinn Scientific's Student Safety Contract:
Read, sign, get parents signature, and return the
contract by Thursday.You will get back the contract
itself to put into your chemistry notebook.
