_Satisfactory._ "All are animals" (or creatures, etc.). "All live on the land." "All have blood" (or flesh, bones, eyes, skin, etc.). "All move about." "All breathe air." "All are useful" (_plus_ only if subject can give a use which they have in common). "All have a little intelligence" (or sense, instinct, etc.). _Unsatisfactory._ "All have legs." "All are dangerous." "All feed on grain" (or grass, etc.). "All are much afraid of man." "All frighten you." "All are warm-blooded." "All get about the same way." "All walk on the ground." "All can bite." "All holler." "All drink water." "A snake crawls, a cow walks, and a sparrow flies" (or some other difference). "They are not alike." (b) _Book_, _teacher_, _newspaper_ _Satisfactory._ "All teach." "You learn from all." "All give you information." "All help you get an education." "All are your good friends" (_plus_ if subject can explain how). "All are useful" (_plus_ if subject can explain how). _Unsatisfactory._ "All tell you the news." "A teacher writes, and a book and newspaper have writing." "They are not alike." "All read." "All use the alphabet." (c) _Wool_, _cotton_, _leather_ _Satisfactory._ "All used for clothing." "We wear them all." "All grow" (_plus_ if subject can explain). "All have to be sent to the factory to be made into things." "All are useful" (_plus_ if subject can give a use which all have in common). "All are valuable" (_plus_ if explained). _Unsatisfactory._ "All come from plants." "All grow on animals." "All came off the top of something." "All are things." "They are pretty." "All spell alike." "All are furry" (or soft, hard, etc.). (d) _Knife-blade_, _penny_, _piece of wire_ _Satisfactory_. "All are made from minerals" (or metals). "All come from mines." "All are hard material." _Unsatisfactory._ "All are made of steel" (or copper, iron, etc.). "All are made of the same metal." "All cut." "All bend easily." "All are used in building a house." "All are worthless." "All are useful in fixing things." "All have an end." "They are small." "All weigh the same." "Can get them all at a hardware store." "You can buy things with all of them." "You buy them with money." "One is sharp, one is round, and one is long" (or some other difference). Such answers as "All are found in a boy's pocket," or "Boys like them," are not altogether bad, but hardly deserve to be called satisfactory. "All are useful" is _minus_ unless the subject can give a use which they have in common, which in this case he is not likely to do. Bizarre uses are also _minus_; as, "All are good for a watch fob," "Can use all for paper weights," etc. (e) _Rose_, _potato_, _tree_