• Untitled Document
    DAY/ DATE January 2015 Topic Covered Homework assignments and Handout links:
    A Mon Jan 5 Simple Harmonic motion. Hooke's law p.371: 1-4
    B Tue Jan 6   Lab string pendulum to measure height  4th period to Lib comp lab 
    C Wed Jan 7 p. 379: 1-4, p. 381:#2 in section review
    D Thu Jan 8Lab: Spring SHM to find K of a spring.   4th period to Lib comp lab 
    A Fri Jan 9spring pendulump. 381 1-5 

    B Mon Jan 12 longitudinal and transverse waves lab with handoutp. 387: 1-4  handout
    C Tue Jan 13 longitudinal and transverse wavesp. 388 : 1-5
    D Wed Jan 14Lab Demo; waves in water |||| wave speed, frequency and period  4th period to Lib comp lab 
    A Thu Jan 15p 394: 1-5
    B Fri Jan 16Lab: use of time period to measure mass.  horizontal spring p. 396: 3-6, 8,9,12,13
    Mon Jan 19 Dr. MLK b-day No school for students  
    C Tue Jan 20 p. 396: 19, 21,22,24,29,34
    D Wed Jan 21Lab : speed of sound 
    A Thu Jan 22 p.396: 36, 43, 45,46,47,48
    B Fri Jan 23Lab: Standing Waves and harmonicsp. 400-401: 1-16 M.C questions

    C Mon Jan 26

    9:15 a.m.•Living Environment•English Language Arts (Common Core)•RCT in Global Studies*

    1:15 p.m.•Hendricks Regents Physics Midterm Exam prep stuff -Comprehensive English•Algebra I (Common Core)•Physical Setting/Physics

    (regents exams week)
    D Tue Jan 27 

    9:15 a.m.•RE in Global History and Geography •RCT in Writing

    1:15 p.m.•Integrated Algebra•RCT in Mathematics*

    (regents exams week)
    A Wed Jan 28

    9:15 a.m.•RE in U.S. History and Government•Geometry•RCT in Science*

    1:15 p.m.•Physical Setting/Earth Science•Physical Setting/Chemistry•RCT in Reading

    (regents exams week)
    B Thu Jan 29 9:15 a.m.•Algebra 2/Trigonometry•RCT in United States History and Government*(regents exams week)
    C Fri Jan 30regents exams week)  

    DAY /DATE February Topics covered Homework assignments and Handout links:
    D Mon Feb 2 Lab : mechanical resonance demo with sound, pie plate and sand.  
    A Tue Feb 3  decibels and sound intensity p. 413: 1,5,7 p. 414: 1,2,3,5
    B Wed Feb 4 Lab: doppler effect  
    C Thu Feb 5   p. 420: 1-5
    D Fri Feb 6 harmonics on standing waves p. 427: 1-4, p. 431 : 1-6

    A Mon Feb 9   p. 434: 3 1,5,11,12,17,26,27
    B Tue Feb 10 . Lab: Standing wave on a string ( wire ) p. 435: 28, 29. 34, 35, 36
    C Wed Feb 11   p, 438: 1-10 (m.c.) 11 -14 ( not m.c.)
    D Thu Feb 12 TEST : summary of topics on sound and waves Chapters 11 and 12 tomorrow Preparation p. 439: 15-19
    A Fri Feb 13 TEST : summary of topics on sound and waves Chapters 11 and 12  
    Mon Feb 16 February Break week  
    Tue Feb 17 February Break week.  
    Wed Feb 18 February Break week  
    Thu Feb 19 February Break week  
    Fri Feb 20 February Break week  

    B Mon Feb 23 Ch 13: Light and electromagnetic waves. p. 449: 1-6
    C Tue Feb 24  light intensity follows an inverse square law p 450 : 1-4
    D Wed Feb 25 Lab: Ray diagrams and plane face mirrors :  
    A Thu Feb 26 Law of Reflection and ray diagrams p 462: 1-4 concave mirror
    B Fri Feb Lab : Ray diagrams for curved convex and concave mirrors.  
    DAY/ DATE March Topics Covered Homework assignments and Handout links:
    C Mon Mar 2   p. 466: 1-6 convex mirror eq
    D Tue Mar 3  additive, subtractive light color p.471: 2 && p. 474 1,2,3 light RGB and CMYK pigments
    A Wed Mar 4   p. 476 2,5,10-13 EM concepts and calculations
    B Thu Mar 5    
    C Fri Mar 6 additive, subtractive pigments p. 477-479: 15, 20, 36, 37, 42, 43, 52

    D Mon Mar 9    
    A Tue Mar 10   p. 482 : 1-10 (M.C.) and 14-19 ray diagrams
    B Wed Mar 11 TEST: Chapter 13 EM waves and light concepts  
    CThu Mar 12 Ch 14 refraction: p. 493: 1,2,3 on refraction
    D Fri Mar 13    
    A Mon Mar 16 p 494 - 499 in the book has several examples of problems we will do in class. Ray diagrams with thin lens ( not in book)
    B Tue Mar 17 Lab :Objects and Images with thin lenses.  
    C Wed Mar 18   p. 508 1-4 total internal reflection
    D Thu Mar 19 Lab: Use of refraction to find index of refraction with parallel plane surfaces  
    A Fri Mar 20   p. 514: 1,2,3,6,10,11,12,13 refraction summary

    B Mon Mar 23    
    C Tue Mar 24   p. 514-515 14, 20, 26, 35, 38 refraction summary
    D Wed Mar 25 Lab: Critical angle to find index of refraction  
    A Thu Mar 26   p. 520-521: 1-10 (m.c.) 14-18 (ray diags)
    B Fri Mar 27 Lab: diffraction of light through grating  
    Mon Mar 30 Spring Break week|  
    Tue Mar 31 Spring Break week|  
    Wed Apr 1 Spring Break week  
    Thu Apr 2 Spring Break week  
    Fri Apr 3 Spring Break week   

    DAY/DATE April Topics covered Homework assignments and Handout links:
    C Mon Apr 6   p. 531 1-4 ; p. 531: 1.2 section review.
    D Tue Apr 7 Lab : use of diffraction to measure diameter of a hair.  
    A Wed Apr 8 Summary of light and EM concepts prior to test p. 538 : 2,5, p. 540: 1-4
    B Thu Apr 9 TEST on Light, diffraction, refraction, ray diagrams and all through chapter 15  
    C Fri Apr 10   p. 563: 1,3,6 electrostatic concepts

    D Mon Apr 13   p. 566: 1-3 coulombs law
    A Tue Apr 14   Ch 16 Electric fields and forces p 570: 1-3 electric force and equilibrium&& p 571: 1,3
    B Wed Apr 15 Lab : Electroscope and static charges and Induced charges  
    C Thu Apr 16   P. 575 E field and strength
    D Fri Apr 17 Lab: High E field surface and attraction. - electrostatic precipitator p. 579: 1-4 Easy concept probs

    A Mon Apr 20   p. 580: 2,3,7 p 586: 1-10 (m.c.)
    B Tue Apr 21 Ch 17 : Electric Energy and Capacitors p. 607: 1-4 capacitor and charge
    C Wed Apr 22   p. 609 1-5 current flow and charge && p. 616: #2
    D Thu Apr 23 Lab: Demonstration playing with capacitors  
    A Fri Apr 24   p 615: 1-6 (ohms law) p. 616: 3.4
    Mon Apr 27 Superintendents conference day  
    B Tue Apr 28  Lab : demonstration: voltage and current devices  
    CWed Apr 29   p 632 : 3,4,5,7,9,10,11,12 ohms law and circuits
    D Thu Apr 30 Lab: measure of conductivity of a wire resistance of a wire problems ( not in book)
    A Fri May 1 Ch 18 : circuits elements of electricity. p. 642: 1,2 p. 645: 1-5 simple circuits concepts

    DAY/DATE Do these exams include you? May topics covered Homework assignments and Handout links:
    B Mon May 4 AP Chem exam 8:00 am . Lab : series circuits construction with lights
    C Tue May 5 Calculus AB Calculus BC   p. 659: 1.2
    D Wed May 6 AP English Literature and Composition Lab : parallel circuits construction with lights
    A Thu May 7 Computer Science A Spanish Language and Culture   p 650 : resisitors in series
    B Fri May 8 United States History Lab : series - parallel with fixed resistors
    C Mon May 11 AP Biology Music Theory   p 656: 1-5 series vs parallel circuits
    D Tue May 12   AP United States Government and Politics    
    A Wed May 13 AP English Language and Composition   p. 663: 1-7 circuit analysis of series/parallel all electrical factors
    B Thu May 14 AP World History Lab: ladder circuit with fixed resistors  
    C Fri May 15      review circuit problems p.666: 2, 3,10, 11,12,

    D Mon May 18 Lab: with lights in series and parallel.
    A Tue May 19    p. 667: 16-18, 23, 24, 25 equilvalent resistance
    B Wed May 20  
    C Thu May 21 REVIEW OF ELECTRICAL CIRCUITS BEFORE TEST. p. 668 - 669: 26, 28, 29, 31, 33. 36, 38
    A Mon May 25 Ch 19 Magnetism begin and animate. p. 682: 1-5 magnetic flux and domain alignment
    B Tue May 26  Magnetic effects demo.
    C Wed May 27   p. 695: 1, 2. 4
    D Thu May 28 Lab : mapping the magnetic field
    A Fri May 29 Amperes law      

    DAY/DATE June topics covered Homework assignments and Handout links:
    B Mon Jun 1 Lab : make an electric motor
    C Tue Jun 2
    D Wed Jun 3  
    A Thu Jun 4     
    B Fri Jun 5
    C Mon Jun 8  
    D Tue Jun 9   
    A Wed Jun 10  
    B Thu Jun 11  
    C Fri Jun 12    

    Mon Jun 15  
    Tue Jun 16 

    9:15 a.m.•RE in U.S. History and Government

    1:15 p.m.•Living Environment

    Wed Jun 17

    9:15 a.m.•RE in Global History and Geography

    1:15 p.m.•Physical Setting/Physics •RE in Algebra I (Common Core)

    Thu Jun 18

    9:15 a.m. •Integrated Algebra

    1:15 p.m. •Comprehensive English

    Fri Jun 19

    9:15 a.m. •Physical Setting/Earth Science •Algebra 2/Trigonometry

    1:15 p.m.•Geometry (2005 Standard)

    Monday, June 22

    Monday, June 22* - 9:15 a.m.•RCT in Global Studies**

    - 1:15 p.m.•RCT in Writing

    Tuesday, June 23 - 

    9:15 a.m. •Physical Setting/Chemistry •RCT in Science**

    1:15 p.m. •RCT in United States History and Government**

    Wednesday, June 24 -

    9:15 a.m. •RCT in Reading and 1:15 p.m.•RCT in Mathematics**

     Fri Dec 5  TEST in class on summary concepts
     Thu Dec 4  
     Wed Dec 3  Review materials for summary test distributed in class.
     Tue Dec 2 

    Impulse lab with homework

     Impulse lab on the air track.  DATA HERE  
    Mon Dec 1  In this lab we used an ultrasound device to track position vs. time for gliders that collided on an airtrack.  In this case, it was not just conservation of momentum we are looking for.  It was also to show that the impulse forward for the second cart is equal to the impulse backwards on the first cart.  There are equal and opposite impulses.  All impulses change momentum but you can change momentum by making it smaller or by making it smaller. 

    Homework on Impulse

    Copy of the homework on Impulse.


     Fri Nov 28  
     Thu Nov 27  Thanksgiving recess for students)
     Wed Nov 26  Superintendents conference Day , no school for students
     Tue Nov 25


    Quiz today on conservation of momentum and concepts covered in the 2 labs.  Should be nice and easy.  Formulas for this unit are generally limited to Momentum before = momentum after and P=mV

     Mon Nov 24 Today we did the 2nd lab on momentum conservation . In this lab, we started with a total momentum of zero by starting the carts together and not moving but with a spring compressed between them.  Students were to trigger the spring and use a ticker tape timer to measure velocity of the carts.  By measuring the velocity and reading the mass of the carts off the side of the cart, students should be prepared to show momentum conservation.



     Fri Nov 21  
     Thu Nov 20 Quizzes at the point of instruction have been shown to improve memory for the concepts covered.  They do not have to be long but they should should be given as close to the instruction as possible.  These quizzes will be graded rapidly and posted to the grades page.  Make sure you are watching the results of these quizzes and that you have homework and labs turned in.
     Wed Nov 19   The second momentum Homework is HERE
      Tue Nov 18

     IN class we looked at several videos involving collision in crashes.

     Mon Nov 17  today we emphasize the mathematical approach to circular motion problems.  .  Remember to turn in the homework given to you on Friday.   You should have your last quiz score posted now and make sure you are ready for the quiz tomorrow.  It is as simple as using the 2 circular motion problems we have used all last week.   Ac = v^2/r and Fc = m Ac  You should also know that the circumference of a circle is 2 π r

     Circular motion homework  HERE


    Fri Nov 14  I'm going to quiz you tomorrow unexpectedly.   Those of you who follow whats happening on the website will not be surprised.  The concept is pretty simple.  In fact HERE is a copy.   We will finish up you lab on circular motion and review some of the topics on your surprise quiz.   Video fun for the day: Ken Brocks ultimate playground SanFrancisco  A stunt driver uses centripetal force concepts to make dramatic turns in his car.  This is a good time to discuss winter driving. 

    Thu Nov 13  We worked today on the centripetal force lab.  In each class, I wanted to emphasize what is needed to write the lab up and that the lab should be written while doing the lab.  This eliminates the need for delay which so often results in no lab coming in.    This lab uses a rubber stopper spinning at a measured speed and used to hold up a suspended mass.

    Wed Nov 12 Begin unit on circular motion.  Some demonstrations: waiters crook,  videos: "wall of death"  "amusement park rotor"
    "motorcycle playground fail   Begin first lab on circular motion which uses a rubber stopper as the object in circular motion and steel washers as weight to balance the centripetal force. 
    End first Marking period.  Begin Second Marking period. 

    Fri  Nov. 7 This is the last day of the marking period.  We will have a (short ) test on friction concepts.  Its your last chance to shine and impress me with how much you have picked up. Make sure your labwork is in.

    Thu Nov. 6  This is the 2nd last day and you will have a quiz tomorrow.  We will spend the first period on practicing friction problems to model the exam Friday.  The second period will be spent in the computer lab working on getting these assignments. 
    I am still adding grades to the online system.  Keep checking.  Students are furiously turning in old work and I am attempting to keep up with it as it comes in.  As a matter of policy in next marking period, I will be far more reluctant to accept older assignments without penalty.  I try to accommodate the many activities and religious holidays but weeks after these are over is too long to wait to get these in. Next marking period I want you to focus on getting them in on time and I'll focus on getting them graded and returned quickly.

    Wed Nov 5. My ability to make drawings is getting pretty bad so I made up some Smart Board slides to help outline the homework issues.   I'm attaching a .pdf version of them HERE.  Students generally have trouble with angles the most but both angles and horizontal surfaces are tested.  Make sure you keep the same equations in mind: 
    Ff = Fn *  μ    F net = m * a  and  Ax = A cos θ
    It is especially important that student THINK.  Sometimes the friction is capable of being a larger force.  So when we calculate the friction is 10 N , what we really mean is somewhere between 0 and 10 N : It will just take more than 10 N to make the object start moving. 

    Tue Nov 4.continuing our discussion of friction using coefficient of friction and normal force.  Problem set done in class today for students to turn in at the end of the period.  And Extra problems to do for homework. This homework is due Thursday
    Mon Nov 3 Several videos involving frictional events.  Some are simple low friction situations such as a Teflon fry pan or roller bearings.  Some were high friction events such as drag races.
    Fri  Oct 24friction table

    Thu Oct 23 
    -  Acceleration of the elevator lab.  This lab measures the acceleration of the elevator both up and down.  The write up does not require any graphs or interpretation of the slope.  It should still follow the lab format but does not have to be typed. 
    Wed Oct 22  Newtons laws Homework and discussion of problem concepts.  A copy of that work is attached HERE
    Tue Oct 21 Another introduction to Newtons laws including the inertia concepts using bowling and soccer balls.
    Mon Oct 20  Start on newtons laws with a series of online and instructional videos

    Fri Oct 17   Test in class on materials to date
    Thu Oct 16-
    Classwork on motion in 2 dimensions with 4 practice problems distributed and worked on in class.  This was not Homework, It is preparation for tomorrows test.  On the test tomorrow, you should see similar problems with scaffolding.  That is I will , likely break the problem into steps.   Copy of the work distributed HERE.
    Wed Oct 15  Classwork today on projectile motions.  I'm not assigning these for HW but they are the most involved of the problems for this section so I will give you a few tomorrow in preparation for a quiz Friday.  Copy of what is passed out today HERE.
    Tue Oct 14  New homework copy HERE on adding vectors and using graphical methods for finding resultants.    Make sure you know this material. Its an easy topic to test you on and an easy topic to master.  You must try and if you do, it will "click" for you.  If its not clicking fast enough, make an appt. to meet me in the library after school and we'll work on it.

    Mon Oct 13 Columbus day off-  Probably a good time to think about myths and historical revisionism.  Columbus landing in North America about 500 years after Thorfinn Karlsefni. but was one of the few explorers who managed to navigate home and return to the same spot.  It was a significant accomplishment.   Historical revisionists sometimes demonize Columbus and his intentions.  Other have made statues of Columbus such as the one in Philadephia.  Since most of the indigenous peoples likely migrated through the northern regions, its likely that some diseases that really don't survive well through extreme cold where unknown to North America.  Columbus's expedition likely brought several diseases to the region at a time when disease in general was not understood.

    Fri Oct 10 Begin acceleration on the 7 degree airtrack lab. In this lab, we use an airtrack which is a relatively frictionless surface to produce an acceleration along a slope.  Since the angle is 7 degrees, the acceleration is  a = g sin 7  , which is about 1 m/s2.
    We will continue the write up for this lab next week.

    Thu Oct 9 vector additions problems based on former regents questions. these are due Friday and attached HERE.

    Wed Oct 8  vector homework based on the samples done in class yesterday.  These were to be done for homework and turned in Thursday the 9th.  Copy of the Assignment HERE.

    Tue Oct 7  continue instruction on vector addition.  A set of samples was distributed , which we worked on in class.  These were not for homework because I did them as examples

    Mon Oct 6   Today we will use the double period to find both the mathematical and graphical solutions for the  addition of vectors shown in the flash file below.  In this animation, we can add the vectors graphically but we will also have to add them mathematically.  I took the problems and added them to a word document  which can be downloaded HERE.

     Fri Oct 3 Today we start motion in 2 dimensions.  We start first with resolving vectors into horizontal and vertical components.   We finished with a homework assignment and some methods for graphically and mathematically adding 2 or more vectors.  This topic will take about a week.
    Thu Oct 2  Students spent the first period and some of the second period obtaining data on angle of projection vs distance traveled.  7th period class had library classroom time to compile and write the lab report.  4th period, no so lucky. 
    The write up for this experiment should include the conclusion made by the golf ball drop experiment.  That is : when a golf ball is drop and thrown horizontally, simultaneously, they strike the floor at the same time.  It should also conclude that the maximum time in the air is at an angle of 90 degrees but the maximum distance is at 45 degrees. 

    Wed Oct 1 Started on projectile motion with the rubber band cannon experiment. Key point of this experiment is to establish the link between angle of projection and characteristics of flight.  Students should write the theory that suggests there is a separation between horizontal and vertical motions.  They should include a data table and graph of results to show which angle produced the greatest distance.
    Tue Sept 30  Test on kinematics return with instructions on how to make test corrections for credit>

    Test corrections: On a separate sheet of paper:  

    • Describe with equations, diagrams or both why the correct answer is correct.
    • If you don't know, ask someone. but don't just skip the problem because you don't understand.
    • The idea is to make sure you do understand. 
    •  If you have a lot of mistakes, you have a lot of work to do. and v.v.
    All or Nothing:
    If you correct most of the problems but not all of them, You don't get credit.
    Circle the right answer instead of the wrong answer is NOT an explanation, no credit
    Separate sheet of paper means just that. write on the test paper instead, no credit.
    All test correction grades use this formula: old grade * 0.75 +25 = new grade
    Example: 85 *.75 +25 = 89 (4 points higher) Example: 60 *.75 +25 = 70 (10 point higher)
    40 *.75 +25 = 55 ( 15 point gain is 1 and 1/2 letter grades higher. Don't just call it an F. I'm not averaging Letters, I'm averaging numbers

    Mon Sep 29  test on Kinematics in 1-D in class 2nd period
    Fri Sept 26  On this double period day, we spent the 1st half on the problems set involving kinematics that was distributed Wednesday.   The second half of the period, we worked in the library computer lab on free fall part II with ticker tape timers.  REmember the purpose for this lab is to observe an accelerated movement caused by gravity and to find the acceleration using the slope of the velocity curve.  Un like free fall in the courtyard, you should have great data for the displacement vs time graph.  Both graphs should accompany your write up.  The theory should address both the displacement and velocity vs time graphs.  You have to able to recognize these motions on graphs.
    Thu Sept 25  Today we looked at samples of kinematics problems on former regents exams.  A copy of these is attached HERE.  Make sure you know how to do problems of this type.  I'm nervous that some of you are copying answers without any sort of standard operationg procedure for answering the questions.  Remember that each problem has 5 parameters d,a,t,Vi and Vf.   You must be able to find at least three of these to find an equation that will lead you to the parameter in question.  Some of these are simple questions.  Such as asking you if you know what distance is vs. Displacement. Some ask you to identify a scalar or a vector.  - which are vocabulary terms.  Most of the ones you will find difficult involve identification of the 3 variables and use of the proper equations.  REmemeber to write units into your equations. 
    Wed Sept 24 Today we gathered free fall data in period 1 and moved to the computer lab in the second period to begin the writeup. REmember the purpose for this lab is to observe an accelerated movement caused by gravity and to find the acceleration using the slope of the velocity curve.  Un like free fall in the courtyard, you should have great data for the displacement vs time graph.  Both graphs should accompany your write up.  The theory should address both the displacement and velocity vs time graphs.  You have to able to recognize these motions on graphs.
    Tues Sept 23  Free fall Part II lab this week.  Copy of this lab attached HERE.  It also contains a pag eon the back for how to address variation in the courtyard free fall data using averages within a spreadsheet.
    Mon Sept 22  - Test today in Class on the items covered so far. Homework: P 64: 1--> 4    P 65 : 1--> 4

    Fri Sept 19 - Homework: P 58: 1--> 6    P 59 : 1--> 4

    Thu Sept 18 - Homework: P 53: 1--> 4    P 55 : 1--> 4  We passed out a document to work on class.  Linked HERE .  This is for our discussion on velocity and acceleration
    Wed.  Sept 17-Homework: P 47: 1--> 4 P 49 : 1--> 5
     today we started the kinematics concepts.  We listed 5 key terms, 2 alternative terms and 3 equations.
    1. Displacement  (D)  - the difference (in meters) between where the motion starts and ends
    2. Acceleration  (a)  - Accelerations change velocity
    3. Time (t)
    4. Initial velocity ( Vi)  - Velocity at the start of the motion
    5. final velocity ( Vf) - Velocity at the end of the motion
      1. Distance (d)  - the Scalar version of Displacement ( a vector)
      2. Speed (s)  - the Scalar version of Velocity ( a vector)

    Tues. Sept 14 - Dropping items out of the window lab.  Today, as Galileo attempted years ago, we dropped water bottles, masses and bowling balls to time how long they would take to hit the ground.  We also measured the height of the window so that we could work the data into graph form .    Most data were summarized by one of the students so that everyone could get it easily.  There is a lot of flexibility in the data but the graph may show a visible result. 

    Mon Sep. 13 -  We did APPR pretest today.  Many teachers will refer to APPR as a silly waste of time and I don't dispute that.  I am seing far fewer teachers doing NOTHING than I used to see.  I am, however, seeing even more great teachers stiffled in what they are able to even try because of fear.  The freedom to do great things also allow freedom to goof off.  There is a lot to be said for goofing off.   One of the best Ted Talks I've seen is Steve Keil summary of play. Although it is aimed at Bulgaria, the science is sound and the concept is applicable everywhere

    Fri. Sept 12  - Students were given a model of the quiz next week on the sig digits and math operations. Solutions are now posted.   I wanted to quiz you but I didn't want to catch anyone off guard.  I tried to model after the homework problems but I picked those problems I felt were easiest to grasp, but still reflected the concept. Today is a double period.  We will use one of the periods to go to the computer room for putting together the lab reports.  Students may either finish the first lab ( common in period 4 class who didn't get as much lab time) or start the 2nd lab report which was explained yesterday and will follow a similar write up technique.  We will likely perform this lab on the next double period (tuesday)

    Thu Sept 11  Your Homework assignment is out of the textbook. Ch1: page 26: 16,19-22 Remember quotient means you divide, product means multiply , sum and difference are add/ subtract. 

    Wed Sept  10 Today we will get more computer lab time to work on how to properly write up a lab.    We also gave a sample lab write up for students to follow.

    Tue Sept 9 New Homework Again on unit conversion and working with SI Units.  This is 2 period day so we will use one period for the pendulum lab.  We didn't get a lot done today in 3rd period because a fire drill occured mid class.  We also didn't have the advantage of a computer lab this period but we hope to fix that tomorrow.  The 7th period class didn't have the distraction and did get the lab time.  We are a little out of sync.

    Mon Sept 8  New Homework  On Significant digits and working with values in SI notation. Books were distributed today and homework methods were discussed.  We finished taking data for the lab and trying to head off potential homework issues.  some relationships included 2.54 cm = 1.00 inch and 5280 ft = 1.00 mile.  The 7th period class had opportunity to start in the library computer lab on the spreadsheet to start the write up for the lab.

    Sept 5 Fri  Because we didn't start  gathering data for the lab, we spent the majority of the period gathering data.  The emphasis today is on thinking about how to gather data.   We need to gather data on length and time period for a simple pendulum. Some students found methods for making the process expedient.  Students also found that holding the pendulum steady might be tough.    Timing was suggested to be for 10 swings but I hope that student saw it really didn't matter if it was 10 or 2, as long as the time for each swing was accurate.  I did NOT assign additional homework today.

    Sept 4 Thu  Students have homework  on use of and work with significant digits.   They also were given the first lab which could take several days to complete.  A copy is provided HERE.

    Sept 3rd Wed  Today we opened the school year with a course requirement syllabus which gave students an overview for what was expected.  They were asked to take home to parents so that parents also knew and coudl reach me at the two best places:  my email is richard.hendricks@rcsdk12.org and my cell phone is 585-314-2029