Background
Sage is a free opensource mathematics software system licensed under the GPL. Its mission is to create a viable free open source alternative to Magma, Maple, Mathematica and Matlab. Also visit Prof. William Stein's blog about things related to Sage.
Sage is now also available online at SageMathCloud, as well as via Android and iOS apps.
In 2010, I participated online in an excellent MAA's Professional Enhancement Program (PREP) workshop Sage: Using OpenSource Mathematics Software with Undergraduates by Profs. Rob Beezer, KarlDieter Crisman and Jason Grout. A list of Sage worksheets from this (first!) and the subsequent PREP workshops can be found here. Immediately after the workshop, I used Sage mainly to enhance lecture notes and exercise sheets using SageTex. However, now with the cloud service SageMathCloud coming along, I am finally actually teaching Sage to my students! Basically, I supply my students with a couple of Sage worksheets in the first half of the semester that they have to go through and apply the acquired knowledge to answer some small question (short programming tasks etc.), before they have to use their knowledge on a (longer and more involved) endofsemester project.
On this page I post my worksheets for the use in the Sage community (admittingly, I have used code from the Sage homepage, from the PREP workshop etc.). More Sage resources for teaching and/or news about it can be found on this page with examples, at this sagemath page, on the sageedu mailing list and at this GitHub page.

SAGE worksheets prepared for "MATH3120: Numerical Analysis" (Semester 2, 201314)

GeoGebra & SAGE worksheets prepared for "MATH1235: Python Programming & Mathematical Software" (Semester 1, 201617)
For the GeoGebra part of this course, we use the first few chapters of Gerard Venema's "Exploring Advanced Euclidean Geometry with GeoGebra" (published by the Mathematical Association of America) as well as "GeoGebra Quickstart Tutorials" available from GeoGebra's homepage.
For the Sage part of this course, Gregory Bard's "Sage for Undergraduates" (published by The American Mathematical Society) is a useful reference besides material I acquired through various Sage workshops.


