<https://iteachnyc.net/2021/09/23/designing-coherent-instruction-course-develop-rigorous-engaging-instruction/#breadcrumb>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://iteachnyc.net/2021/09/23/designing-coherent-instruction-course-develop-rigorous-engaging-instruction/?shared=email&msg=fail>