Assessment is STEM courses (and how they integrated in LMS:

• Explain Everything (Math)  https://explaineverything.com/
• EquateIO (Math)  https://www.microsoft.com/en-us/p/equatio/9p02xk38043p?activetab=pivot:overviewtab (for Microsoft)
• Gradescope (Grading for STEM Assessments) https://www.gradescope.com/
• Sphere Engine (CS and coding) https://sphere-engine.com/
• Crowdmark.com (peer grading) https://crowdmark.com/
• Nearpod https://nearpod.com/
• Show Me https://www.showme.com/

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More on assessment in this IMS blog
https://blog.stcloudstate.edu/ims?s=assessment