The overhead projector, a familiar sight in many science rooms, can be used in a number of interesting ways. In chemistry, I use the overhead to demonstrate reaction rates of metals in acids. Just put your beakers (labeled with wax pencil on the bottom) on the overhead and watch the reactions take place on the wall. You can, also, demonstrate titration end points with the overhead. The colored indicators show up nicely.
Iowa Science Teachers' Journal
© Copyright 1964 by the Iowa Academy of Science
Murphy, Bert A.
"Ways to Use the Overhead Projector,"
Iowa Science Teachers Journal: Vol. 2
, Article 9.
Available at: https://scholarworks.uni.edu/istj/vol2/iss1/9