A year ago a report was made on an experiment in teaching the vernier. The findings were so unexpected that the experiment was repeated in September, 1936, with almost the same results.
Proceedings of the Iowa Academy of Science
©1937 Iowa Academy of Science, Inc.
Lapp, C. J.
"A Repetition of the Experiment on Teaching the Vernier,"
Proceedings of the Iowa Academy of Science, 44(1), 154-154.
Available at: https://scholarworks.uni.edu/pias/vol44/iss1/62