Tuesday, February 7, 2012

W09 electromagnetism learning difficulties

Saving time by using blogger iPhone to upload photo

Jenaro Guisasola

http://www.aapt.org/Conferences/wm2012/workshops.cfm

W09: Teaching & Learning Electromagnetism in Intro Phys

Date/Time

  • Sat, Feb 4
  • 8:00 AM to 12:00 PM

Organizer

Jenaro Guisasola

Cost

  • Members: $95.00
  • Non-members: $120.00

Seats

  • Max: 35
  • Available: 22
Teaching and Learning Electromagnetism in Introductory Physics Courses - In the workshop it will discuss the impact of physics education research on electromagnetism in the educational designing and practice of physics teaching at university level. Two of presentations will present studies about students' difficulties of learning topics of electromagnetism such as electromotive force, electromagnetic induction or Faraday's law. It will present also a study about the problems of teaching Maxwell equations in relation to cognitive theories. Finally, a study on developing students' mathematics' techniques involving the meaning of the physics concepts will be discussed. Organizer: Jenaro Guisasola

Jenaro Guisasola with an overview http://wwwcsi.unian.it/educa/curriculum/cv_jga.html

missing Mieke De Cock picture
http://www.kuleuven.be/wieiswie/en/person/u0021796/@@view
found this paper
http://www.univ-reims.fr/site/evenement/girep-icpe-mptl-2010-reims-international-conference/gallery_files/site/1/90/4401/22908/29321/29506.pdf
Summary:
good way to code, A correct, B alternate concepts, C inaccurate reasoning D incoherent, table taken from http://www.univ-reims.fr/site/evenement/girep-icpe-mptl-2010-reims-international-conference/gallery_files/site/1/90/4401/22908/29321/29506.pdf
common misconception includes:
  1. emf as a force that does work or has energy
  2. confuse emf with voltage difference
  3. belief potential difference produce emf
Here is the wikipedia answer:
  1. electromotive "force" is not a force.
  2. emf is the external work expended per unit of charge to produce an electric potential difference across two open-circuited terminals.[2][3] The electric potential difference produced is created by separating positive and negative charges, thereby generating an electric field.[4][5] The created electrical potential difference drives current flow if a circuit is attached to the source of emf. 
  3. A source of emf can be thought of as a kind of charge pump that acts to move positive charge from a point of low potential through its interior to a point of high potential. … By chemical, mechanical or other means, the source of emf performs work dW on that charge to move it to the high potential terminal. The emf of the source is defined as the work dW done per charge dq: = dW/dq.
 I has breakfast with Taha who shown me his latest EJS simulation that addresses this visualization in 3D, maybe we can wait for his release of the simulation which Taha used for teacher training.


Paul van Kampen's 2nd workshop on integration in Physics http://www.dcu.ie/info/staff_member.php?id_no=2054
Paul van Kampen
Jenaro Guisasola on learning electromagnetism induction emi
Jenaro Guisasola setting up engage (5e) why should we learn electromagnetism induction emi ?
Jenaro Guisasola on macro (Faraday Law) and micro (Lorentz law) representations and explanation of on learning electromagnetism induction emi
on learning electromagnetism induction emi
on learning electromagnetism induction emi http://sites.google.com/site/guisasolapages