Electric Field Viewer

Documentation Review: I found the model fairly self-explainitory, however it might be beneficial to have a very brief help document on how to manipulate certain things like the position of the charges. Recommendations: In addition to a help document, changing the magnitude of the charge of the particle might be something useful to incorporate into this model.

Test Case(s): Based on the basic equation for electric field (E=kQ/(d^2)) it can be determined with relative certainty that this model is accurate on both firefox and internet explorer. The experiment I conducted to determine this was fairly simply. I took the field reading in several places. I then multiplied that field reading by 4 and compared that new field quantity to the field quantity double the distance away. The results matched up perfectly, as was expected due to the inverse square relationship between distance and field as stated above in the given equation. Problem(s) annotations: None based on the test aside from the lack of units for charge and distance (which aren't really required anyway). Recommendations: I suggest an input section where the user can input certain quantities (distance and magnitude of charge).

Problem(s) annotations: I would recommend this tool for any physics related classes especially AP Physics EM since the area of focus for that class is based upon the same material covered in this tool. However physics isn't an option in the subject area section. I would also recommend that if the option to input values and coordinates were added this tool would be even more suitable for higher-level audiences. Recommendations: I once again recommend that an area be added so the values and quantities can be input manually. As is though this tool meets the NSES content standards for 5-8 graders in the area of Science as Inquiry and for grades 9-12 in the following areas: Science as Inquiry, Physical Science, and Science and Technology.