The primary reason for incorporating Spatial vis in the MER-101 course is to make hand-drawing more appealing to students. Students practiced plenty of 2D orthographic projections and 3D isometric drawings using the Spatial Vis app, as the app allowed unlimited attempts to get the answers right, and when the students could not answer correctly, the app provided hints for reduced points. As they were graded instantly by the app, it was a lot of fun for students to complete the hand-drawing exercises.
Spatial vis app helped in most certainly improving:
student participation in completing all the homework.
student performance in the hand-drawing midterms.
It even resulted in some students exploring and going beyond what is typically covered in the MER-101 course.