KaiserScience

Home » Physics

Physics

Advertisements

“There are more men ennobled by study than by nature.”

Marcus Tulius Cicero (106-43 BC) Roman writer, politician and orator.

The scientist does not study nature because it is useful to do so. He studies it because he takes pleasure in it, and he takes pleasure in it because it is beautiful. If nature were not beautiful it would not be worth knowing, and life would not be worth living. I am not speaking, of course, of the beauty which strikes the senses, of the beauty of qualities and appearances. I am far from despising this, but it has nothing to do with science. What I mean is that more intimate beauty which comes from the harmonious order of its parts, and which a pure intelligence can grasp.
– Henri Poincaré, in “Science et méthode” (1908), as translated by Francis Maitland (1914),

Olympic Forces: Academic fair topic

cropped-a-serious-man-colorful-physics-chalkboard1.jpg
The size and scale of the universe

scientific notation worksheets with answers

Normal force Objects really never touch « KaiserScience

Free Body Diagram lesson and problems – Google Docs

The Massachusetts Board of Elementary and Secondary Education has adopted revised science standards. They are based on the Next Generation Science Standards, which is based on A Framework for K-12 Science Education: Practices, Crosscutting Concepts, and Core Ideas (2012), from the National Research Council of the National Academies.

High school students are expected to have learned certain math skills by the end of grade 8; they will use these math skills in this course. Additional math skills are introduced throughout the year.  Also see Benchmarks: American Association for the Advancement of Science from the American Association for the Advancement of Science (AAAS).

2016 Massachusetts Science and Technology/Engineering Curriculum Framework
College Board Standards for College Success: Science
2006 Massachusetts Science and Technology/Engineering Curriculum Framework
Massachusetts History and Social Science
Benchmarks for Science Literacy, AAAS

Common Core Literacy in History/Social Studies, Science, & Technical Subjects

Notebook checklist

MCAS Open Response questions with solutions
Math skills needed for 9th grade physics
Math is the language of physics

What are emergent phenomena?

Timed classwork

We are preparing students for college and real world careers, where assignments must be completed in a set amount of time. Timed standardized tests include:

Some MCAS exams, e.g. English Language Arts Session 2B
PARCC Math test: Algebra, Geometry, and Integrated Mathematics.
Unit 1 – 90 min, Unit 2 – 90 min, Unit 3 – 90 min
SAT subject area test in physics: 75 questions in 60 minutes
AP Physics: 50 multiple choice in 90 minutes, and 5 free-response in 90 minutes.

Class rules

1. No horseplay.

2. No using cell phones or other digital electronics (unless otherwise instructed)

3. Everyone participates – yet just one person at a time.

3. Always bring: pencils, colored pencil set, eraser, calculator, and both lined and blank paper to take notes on.

4. If you miss class, find out what you missed. The first step is to get a copy of the notes/handouts.

My teaching philosophy

Adapted from “Reclaiming Education”, Lisa VanDamme, March /April 1999, The Intellectual Activist.

physics-sketch-physics-22597904-2323-1054

It seems that science is not taught in the public middle schools today….At the high school level, most students are exposed to some science, and most are required to take a physics class. But these physics classes generally suffer from a serious [methodological] problem. Let me give you an example of this problem, and then I will explain it. The following scenario will probably be familiar to many of you. It is halfway through the semester, and your physics teacher is going to discuss Newton’s Laws. You come into class, sit down, and the teacher begins to write on the board:

“These are Newton’s three laws of motion. #1: Every body continues in its state of rest or of uniform motion in a straight line unless it is compelled to change that state by forces impressed on it. #2:…,” and so on. No explanation is given as to what observations, integrations, or discoveries Newton made in order to arrive at these laws of motion. No account is given of the long history behind Newton’s laws of motion–of the earlier theories that were refuted or were accepted and refined.

Here, scientific knowledge is presented as a series of commandments rather than as conclusions that have been reached by a laborious process of observation, experiment, and induction. If taught physics this way, a student’s grasp of the principles is necessarily detached from reality.

This approach to teaching physics also fails to provide students with a real understanding of the scientific method. If they are not exposed to the way in which a great scientist makes observations and then integrates them to arrive at an innovative conclusion, then they will not understand how science is done. Like the writing process, it will seem like an innate gift of born scientists, and they will never understand that they too can learn the process by which new discoveries are made.

Because students are not learning the scientific method through real, historical examples of scientific discoveries, they usually have a few classes within the physics course devoted just to the scientific method. But the way this method is taught reflects the same rationalism. Students are told that the first step in the scientific process is to, “Choose a hypothesis.”

Not a word is said about the process of observation that should lead you to a hypothesis, so the implication is that the hypothesis must be chosen on a whim or divinely inspired. Again, what they leave out is observation, integration, and induction.

We need to use a way of teaching physics that gives students a real, grounded, and complete understanding of the principles of physics. The best way is to teach it chronologically. By chronologically, I do not mean that we try to chronicle every development in the history of physics. That would be practically impossible and pedagogically disastrous. Rather, we teach the essential discoveries of physics in their historical order of development.

By teaching physics chronologically you teach it inductively. Induction is the process of reasoning from concretes and lower-level abstractions to higher-level abstractions. The earliest discoveries in physics are necessarily the closest to the perceptual level. They are the simplest discoveries, and lay the groundwork for all later developments.

So, if you study physics historically, you begin with these simple discoveries, close to the perceptual level. After these discoveries are grasped, you can proceed to the next stage in history, integrating the most basic discoveries with the observations made by the next scientist, and grasping a conclusion at a step more removed from the perceptual level. As you proceed through history, you are able to grasp principles on increasingly wider levels of abstraction.

In our historical approach to physics, students gain their knowledge inductively, starting with knowledge close to the perceptual level and building to greater and greater levels of abstraction.

There is an added advantage to teaching physics historically. It is fascinating to learn physics as a story–to learn how and why one development led to the next, and to learn it in the context of the lives of actual scientists. We give some biographical detail when possible. Children love to be inspired by heroes–so knowing that Newton did most of his work in two years on a sheep farm, and hearing that Galileo did much of his work while under house arrest gives them more interest in each man’s scientific discoveries.

My teaching philosophy – RK

One of the primary jobs of a physics teacher is not to teach physics, but to unteach erroneous beliefs about physics For instance:

(A) Students think that for every action there is an equal and opposite *action* – but Newton’s law is about force, not action – and not all forces produce motion.

(B) Students think that electrons flow through conductors at the speed of light. However, just as air particles don’t move at the speed of sound, electrons don’t move through metals at the speed that energy propagates.

(C) Students live in a world of friction, and come to class with an Aristotelian physics worldview: For instance, objects in motion? Students think they always come to rest, unless continuously acted upon by an outside force. Yet in reality, objects in motion stay in motion unless acted upon by an outside force (e.g. friction)

(D) History and the scientific method: I don’t have a separate unit on “the scientific method”; those are over-simplified. Physics is not a set of commandments; rather, it’s the discovery of patterns found by observation, experiment, and induction. The best way is do this chronologically: I lead students through discoveries in historical order. This helps them develop induction – reasoning from concrete idea up towards higher-level abstractions. And it also ties to the stories of the people involved, their life and times – and we know from research that students can remember better when ideas have coherent storylines.

Apps

https://academo.org/physics/

https://phet.colorado.edu/

External links

The Physics arXiv blog

The History of Physics – Galileo and Einstein: Lectures

Previously released Physics MCAS exams

http://www.doe.mass.edu/mcas/2011/release/ghsphys.pdf

http://www.doe.mass.edu/mcas/2012/release/ghsphys.pdf

2012 MCAS Sample Student Work and Scoring Guides

http://www.doe.mass.edu/mcas/2013/release/ghsphys.pdf

http://www.doe.mass.edu/mcas/2014/release/

http://www.doe.mass.edu/mcas/2015/release/HS-Physics.pdf

http://www.doe.mass.edu/mcas/2016/release/HS-Physics.pdf

Isaac Newton

SlideShares

Conceptual Physics Powerpoint presentations

Holton’sworld Physics Textbook powerpoints  Hewitt Conceptual Physics, Walker Physics, Serway College Physics

Stephen Kwong’s Physics presentations

Chapters of Giancoli Physics (PDF)

Visualizations, animations and GIFs

List of physics visualizations and related artifacts, by Pierre Dragicevic and Yvonne Jansen

http://physicsfootnotes.com/library/gifs/

Table of contents: Giancoli Physics 7th ed.

1. Introduction, Measurement, Estimating
2. Describing Motion: Kinematics in One Dimension
3. Kinematics in Two Dimensions; Vectors
4. Dynamics: Newton’s Laws of Motion
5. Circular Motion; Gravitation
6. Work and Energy
7. Linear Momentum
8. Rotational Motion
9. Static Equilibrium; Elasticity and Fracture
10. Fluids
11. Oscillations and Waves
12. Sound
13. Temperature and Kinetic Theory
14. Heat
15. The Laws of Thermodynamics
16. Electric Charge and Electric Field
17. Electric Potential
18. Electric Currents
19. DC Circuits
20. Magnetism
21. Electromagnetic Induction and Faraday’s Law
22. Electromagnetic Waves
23. Light: Geometric Optics
24. The Wave Nature of Light
25. Optical Instruments
26. The Special Theory of Relativity
27. Early Quantum Theory and Models of the Atom
28. Quantum Mechanics of Atoms
29. Molecules and Solids
30. Nuclear Physics and Radioactivity
31. Nuclear Energy; Effects and Uses of Radiation
32. Elementary Particles
33. Astrophysics and Cosmology

_____________________________________________

This website is educational.  Materials within it are being used in accord with the Fair Use doctrine, as defined by United States law. Title 17 of the United States Code is the United States Code that outlines United States copyright law. It was codified into positive law on July 30, 1947.

§107. Limitations on Exclusive Rights: Fair Use

Notwithstanding the provisions of section 106, the fair use of a copyrighted work, including such use by reproduction in copies or phone records or by any other means specified by that section, for purposes such as criticism, comment, news reporting, teaching (including multiple copies for classroom use), scholarship, or research, is not an infringement of copyright. In determining whether the use made of a work in any particular case is a fair use, the factors to be considered shall include:

  1. the purpose and character of the use, including whether such use is of a commercial nature or is for nonprofit educational purposes;
  2. the nature of the copyrighted work;
  3. the amount and substantiality of the portion used in relation to the copyrighted work as a whole; and
  4. the effect of the use upon the potential market for or value of the copyrighted work. (added pub. l 94-553, Title I, 101, Oct 19, 1976, 90 Stat 2546)
Advertisements
%d bloggers like this: