About: http://webisa.webdatacommons.org/422595634

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	They will learn to classify rocks according to three primary types -- sedimentary, igneous and metamorphic -- and put scientific skills to use, including observation and testing.
http://www.w3.org/ns/prov#wasQuotedFrom	howstuffworks.com