About: http://webisa.webdatacommons.org/9250170

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	In this unit, you???ll learn about forces such as gravity and motions such as skateboarding, including how skateboarders can seem to defy gravity.
http://www.w3.org/ns/prov#wasQuotedFrom	ck12.org