About: http://webisa.webdatacommons.org/291331193

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	Use different kinds of investigation, including observation and description to achieve broad understandings in science.2 The concept of sound waves is a complex topic and may be difficult for young students to understand.
http://www.w3.org/ns/prov#wasQuotedFrom	yale.edu