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<http://webisa.webdatacommons.org/207115938>	<http://www.w3.org/ns/prov#value>	"To accomplish this, students must apply ideas such as equality, proportional reasoning, variables, and combining groups of objects." .
<http://webisa.webdatacommons.org/207115938>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/207115938>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<mathplayground.com> .