About: http://webisa.webdatacommons.org/39215546

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	Subject: Zip: ...It is very important to be master at prealgebra because this subject is root of math tree and all other maths and even some science such as chemistry, physics, etc are branches of that tree.
http://www.w3.org/ns/prov#wasQuotedFrom	purplemath.com