WeBWorK is an open-source online homework system for maths and sciences courses, supported by the Mathematical Association of America and the National Science Foundation (USA). It gives students instant feedback as to whether or not their answers are correct.
WeBWorK allows you to build courses such as algebra, discrete mathematics, probability and statistics, single and multi-variable calculus, differential equations, linear algebra and complex analysis. The Open Problem Library (OPL) has over 20,000 homework problems.
WeBWorK are developed and maintained by mathematicians since 1994, with the goal of providing the mathematical community with the most robust, flexible, and mathematically capable online homework system possible.
The EdTech team could help you open a WeBWorK course and set up the accounts. Contact EdTech at firstname.lastname@example.org to get started!