About: http://webisa.webdatacommons.org/235656863

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	Instead of measuring length of wall, put a fruit or just a round sticker along the wall and ask the students to determine based on their measurements whether the fruit or sticker is moving away or getting closer to them.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com