Matrices
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    First 50, The
  This is a collection of small programs, including some on matrices, which you can type in yourself or download.  They perform a multitude of small tasks, some that are so easy you'll wonder why I wrote a program for them, some that are really cool. For FAR more information click here.

Author: Colin Croft

     
 
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    Hyper Matrix
  This is a program not an aplet and must be downloaded into the Program Catalog.  To quote the author: "It lets students quickly do matrix calculations. The problem with matrices is that you have to switch from HOME to the Matrix Catalog to do calculations. By the end of it all, the exam's over, the examiner is pulling your paper away and you've pulled out your hair due to frustration. Hence this program. It displays a list of matrix calculations you can perform (add, subtract, inverse etc..). It then asks you for two matrices, M1 and/or M2. Results are displayed & stored in M1. It even detects when calculations aren't possible. While this may sound lengthy, it does take place a lot faster. It comes with a help file. At the moment, it is limited in only working with M1 or M2, but there are ways around that. I'll also work on a new version that let's you work with (hopefully) as many matrices as possible, but that may not be anytime soon. Until then this doesn't leave me bald at the end of an exam."

Author: Jarryd Pinto

     
 
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   Gauss Jordan Operations
  This aplet was created by Roso Giuseppe (Beppe) and allows the user to perform the Gauss Jordan algorithm on a matrix using full row pivoting. More such advanced matrix manipulation programs may be added to this section so check back later.
Note: The 38G version will probably not become available.
     
 
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    Row Operations
  This aplet allows the student to apply elementary row operations to an augmented matrix. It is a teaching aplet to illustrate the processes involved, not a serious solver of problems.  If you want to solve n x n systems then use the RREF function.
More Information

Author: Colin Croft

     
 
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    Matrix Transformer
  An easy adaption of the Parametric aplet allows the student to investigate geometric transformations using 2x2 matrices. It is very easy to create it yourself instead of downloading it and it is a fantastic teaching tool - my class deduced all the basic 2x2 transformation matrices for themselves in less than an hour.  The only drawback of creating it yourself is that you can't then transfer it to your students' calculators - there's a bug in the calculator that scrambles the equations in the SYMB view when you try (not every time but...). On the other hand, it's very simple to create and the class will understand what's going on better if they create it themselves.

For those of you who are lazy, I have also created a fully programmed version with the usual VIEWS menu. You can download that by clicking on the appropriate link to the right. The advantage of this is that the equations get automatically reloaded when you press START and so the scrambling bug doesn't matter.
More Information
Note1:  This aplet has been updated (22/10/02)
Note2: And again (15/5/04)

Author: Colin Croft

     
 
 
 

Last modified: 19 Dec 2007                                             Sitemap        Home        Contact Me