Overall Usage Level

Minimal use

i.e., Canvas is neither relevant nor necessary to achieve any explicitly stated course learning outcomes and therefore has no impact on my course-related learning.

Supplemental use

i.e., Canvas is relevant but not necessary to achieve a few explicitly stated course outcomes and therefore does not have much impact on my course-related learning.

Integral use

i.e., Canvas is relevant and contributes to achieving some of the learning outcomes in the course, and would have a fair impact on my course-related learning.

Central use

i.e., Canvas is relevant and necessary to achieve most learning outcomes in the course, and would have a substantial impact on my course-related learning.

Exclusive use

i.e., Canvas is relevant and necessary to achieve all learning outcomes in the course, and would have a major impact on my course-related learning.

Reference:
Gandell, T., Weston, C., Finkelstein, A. & Weiner, L. (2000) Appropriate use of the web in teaching higher education, in: B. L. Mann (Ed.) Perspectives in web course management (Toronto, Canadian Scholars’ Press), 61–68.