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1-Visitor
November 26, 2013
Question

Mathcad for high school physics problems and lab reports

  • November 26, 2013
  • 1 reply
  • 8903 views

Hi,

The context for these questions is that I've recently finished the attached two tutorials, as well as the Mathcad Prime 1.0 Orientation and Working with units courses on PLMS4Schools. The attached two tutorials are exactly the kind of thing I want to use it for - to have my students use it as a scratchpad for doing physics and maths problems, and for writing up experiments, especially experiment data tables and plots.

However, from the perspective of an upper high school physics and maths teacher, there are two significant inadequacies in this regard:

Mathcad doesn't seem to have any feature that allows students to draw sketches "on the fly".

So many physics and maths problems require diagrams other than plots - think free body diagrams, electrical circuits, impulse-momentum, vectors, etc. In fact, I've seen several examples in the PLMS4schools courses of exercises where the problem is explained using a sketch of the forces on a beam - so how are these sketches produced?

Is the intention that they do these kind of things in another program (like Paint or Visio) and then insert them into the worksheet, or have I just not found the feature? If it does exist, there doesn't seem to be a lesson on it anywhere (I've searched the Learning Connector ad Knowledge Base for "Diagrams" "Sketch" and "Drawing" and nothing came up). A freehand sketch feature would be really useful.

2. I can't find a lesson anywhere on simply how to plot a linear line of best fit for a set of experimental data points (plotting "manually entered" data points, yes, but plotting and finding the slope of the line of best fit, no. I've looked through the "Design of Experiments Using Mathcad Prime 2.0" course, but it's way more advanced than what we need at high school level). Or simply to present experimental data in a table for that matter. I've checked all the likely-looking PLMS4schools courses, searched the e-learning connector and knowledge base, scanned through the "getting started" tutorial topics, and browsed the videos at

precisionlms.ptc.com/web/videos/mathcad/prime2.0/en/

but couldn't find anything. What would be really useful is a tutorial pitched at a similar level to the attached ones, entitled something like "High School Lab Reports with Mathcad Prime".

If there are any high school physics teachers out there who are already using Mathcad and have already solved the above problems, or even better, have already created a lesson on "High School Lab Reports with Mathcad Prime", please share!

Or if I'm just missing something, please let me know.

Thanks,

Benson

1 reply

24-Ruby IV
November 26, 2013

Benson Wallace wrote:

2. I can't find a lesson anywhere on simply how to plot a linear line of best fit for a set of experimental data points

See please Matthcad functions slope, intercept, lintercept etc

Benson Wallace wrote:

If there are any high school physics teachers out there who are already using Mathcad and have already solved the above problems,

See please two my article about it. You can use the google translater.

Problems in physics: a new approach to solving - http://twt.mpei.ac.ru/ochkov/Mathcad-15/Physic.pdf

Teaching of mathematics and mathematical packages - http://twt.mpei.ac.ru/ochkov/Mathcad-15/OchkovMath.pdf

One arficle in englis http://twt.mpei.ac.ru/ochkov/Mathcad-15/SYSTEM-OF-EQUATIONS.pdf

1-Visitor
November 26, 2013

Thanks Valery,

Those articles are still a little high level for our purposes, but thanks for sharing.

I couldn't find the function "lintercept" when I search for it under "all functions". Is that an old command from an earlier version of Mathcad? I'm using Mathcad Prime 2.0 Academic version.

I did find a workaround for the line of best fit using the "line" function (see attached), but it would be nice if there was a way to automatically add the line of best fit without having to type "line(x,y)" and then define another function using the two coefficients that line(x,y) returns.

Another problem I have now is the following - how to force the line of best fit to pass through (0,0)? (which is something we often need to do in high school physics, for example if plotting force vs extension for a spring)

Cheers,

Benson

24-Ruby IV
November 26, 2013

See please this animation http://communities.ptc.com/videos/3543

This animation was described in this article

http://twt.mpei.ac.ru/ochkov/Mathcad-15/ScalarVector.pdf

One picture from the article (вес - mass of student, рост - growth of student):

Вес-Рост.png