Pre Ap Chemistry Homework 6a Texas

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                    Pre-AP Chemistry  2017-2018

                                                       Mrs. Erwin

Chemistry is the study of matter and its interactions.  Emphasis will be placed on problem solving and laboratory skills.  We will do a variety of activities to do science rather than just read it in the textbook.  Attendance and participation is necessary.  

The Chemistry TEKS (Texas Essential Knowledge and Skills) will be the foundation of the course. Pre-AP Chemistry will also focus on the math of chemistry, labs with more inquiry, and further depth of the basic chemistry concepts.  It is important that each student have a strong understanding of chemistry in order to understand the world around them and to prepare for a variety of other science classes at the high school and college level.  


My name is Mrs. Sabrina Erwin.  I have a B.S. in Biology/Chemistry from Ouachita Baptist University.  I worked as a chemist for five years before becoming a teacher.  I have previously taught in Dallas, Denton, Prosper, Singapore, and Japan.  My husband teaches chemistry at Braswell HS and our children are 15, 17, and 20 years old.

You can reach me:

  1. in my classroom B218.  I am available before school, after school, or during my conference period (AB5)

  2. by classroom phone at 940-369-1000

  3. by email at

  4. by remind - Sign up by texting the message @88g7f6 to 81010 or going online to


  1. Textbook (which will remain in the classroom) and an online textbook (with a code that will be passed out around the 3rd week of school).  Students who would like to take a actual textbook home may request one by going to the book room at the beginning of the year.  Students will be given a write-in workbook that contains a summary of the textbook along with practice problems. 

  2. 3-Ring Binder or folder with loose-leaf notebook paper (wide or college)

  3. Place to take notes and do homework such as paper in a binder or folder, a spiral, or a composition book

  4. Pencil or Pen (blue or black ink only)

  5. A box of tissues, a roll of paper towels, and at least one white-board marker - to leave in the room

  6. A calculator will be provided but you may bring your own


All Pre-AP classes in Denton ISD will be using the same grading scale which is:

Tests/Major Projects:  70%

Minor Assignments:30%

Your grades will be posted online which can be viewed by you and your parent/guardian at any time.  


The test grade will be used as remediation for minor assessments if the homework was completed before the minor assessment and the student submits a form signed by their parents on test day.  To reassess on a major exam, all homework for the unit must be completed and submitted before the first exam. There will be one date at the end of the two week period in which students will be able to reassess the test. There is no reassessment for the semester exam.  If the lack of effort on classwork effects the overall grade or causes a disruption, parents and administrators will be notified and consequences will follow.


Please read the lesson plans calendar posted on the website to determine what assignments were missed.  You may need to attend tutorials in order to receive instruction on the missed material.  You will have the number of days absent plus one day to make up any missing assignments.  Missed quizzes, tests, and labs will need to be done during tutorials. Labs not completed within one week of returning to school will have a alternate assignment to replace the grade but students may miss out on needed information for future tests. (It is impossible to keep multiple lab set-ups out when various classes are doing several labs a week.) 


Chemistry is a class that builds on itself.  It is very important to master each topic or the next topic will be difficult.  Tutorials times are:

Daily from 8:30-8:45am and 4:10-4:30pm

Monday and Wednesday - extended tutorials from 8:00-8:45am and 4:10-4:55pm                                                                                       Friday - extended tutorial from 8:00-8:45am


Please let me know if you need additional tutoring time.

Class Rules

The class rules are:

  1. Respect yourself and others.

  2. Be in your seat ready to work when the tardy bell rings.

  3. Follow all directions the first time they are given.

All Denton ISD and Guyer High School rules will also be in effect in the classroom.  

Consequences of breaking a rule

  1. Warning

  2. Meeting with teacher before or after school and parent notification

  3. Student detention from 8:30-8:45am or 4:15-4:30pm and parent notification

  4. Referral to administrators which may result in the Tuesday/Thursday all school afternoon detention from 4:15-5:15pm, a Saturday School, or In-School Suspension.  Any severe issues will be immediately sent to the administration.

**If you choose to misbehave in the lab, you will be removed from the laboratory setting immediately and given a substantial, appropriate alternative assignment.  Then, suitable disciplinary action will be taken.

**Any phones used or seen during class without teacher permission will be immediately taken from the student and brought to the office by 3:45pm for parent pickup.           

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