Which way is up? Which way is down? Are these always opposite directions? Can you construct a definition of up that is true and that works in all situations? Consider the following situations and for each state an operational definition.
Iowa Science Teachers Journal
© Copyright 1984 by the Iowa Academy of Science
"Up or Down,"
Iowa Science Teachers Journal: Vol. 21
, Article 17.
Available at: https://scholarworks.uni.edu/istj/vol21/iss3/17