To move course materials from Blackboard to Canvas ON YOUR OWN:
Export, or archive your Blackboard Courses. (Export support)
Upload and save your Exported Blackboard courses Zip files into Box and then import your course files from Blackboard into Canvas
For help, watch the videos on the left and/or follow these step-by-Step illustration: How do I import content from Blackboard into Canvas? view this (support DOC)