About: http://webisa.webdatacommons.org/110867798

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	This link is a PowerPoint presentation that demonstrates the ladder problem and baseball diamond problem.
http://www.w3.org/ns/prov#wasQuotedFrom	teachersnetwork.org