<https://blog.teacherspayteachers.com/how-to-use-technology-for-differentiation-and-delivering-small-group-instruction/#breadcrumb>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://blog.teacherspayteachers.com/How-to-Use-Technology-for-Differentiation-and-Delivering-Small-Group-Instruction/>