The educationalists should certainly watch the above video. But alas, the educationalists are still stuck in the concrete world making periodical raids into the abstract world to assert the false 19th century universal truths of education to continue to tick in the 21st century classroom. Where else would one find if not the K to 12 classroom,  a parent being told, their child is a slow learner but the child does not need to avail of intervention of any sort, since the child is passing? 

However we all know why the public education K to 12 is in the concrete world, making raids into the abstract world from time to time….........the employees of the public education system would not have it any other way, because the 19th century knowledge matrix makes oodles of monies and profits for the employees at the expense of the students and their education, concrete and abstract withstanding.