[TIPS] - xyAlgebra and a writing resource

http://www.xyalgebra.org/
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The student programs (xyAlgebra and xySolver) feature:

• Explanations of principles of basic algebra (320 instructional items).
• Step-by-step sample problems that the student can consult later.
• Practice problems randomly generated until student shows mastery.
• All solutions are entered step-by-step.
• All legitimate solution methods supported.
• Any incorrect step is flagged as soon as it is typed.
• A hint or suggested next step can always be requested.
• Intelligent help at every step, including instant prerequisite review.
• Solution strategy changes intelligently in response to the student's steps.
• 700 practice problem forms generating 100,000+ distinct problems.

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http://writing.whatcom.ctc.edu/ - Looks like some very nice writing resources. The Online Writing Center from Whatcom Community College