There is nothing in the Biology course which can take the place of carefully planned and directed field work. The students should be encouraged to observe carefully and accurately for themselves and be given every opportunity to become acquainted with living things in their natural surroundings. The aquarium and terrarium can be made to supply much interesting material for study and should be in the laboratory whenever possible.
©1931 by Iowa State Teachers College
Clark, O. R.
"Suggestions for the Teaching Collection in Biology,"
Science Bulletin: Vol. 4:
3, Article 7.
Available at: https://scholarworks.uni.edu/science_bulletin/vol4/iss3/7