Teachers' gestures boost math learning

Boost math learning

Students learn better when their teachers use hand gestures - a simple teaching tool that could yield benefits in higher-level math such as algebra - according to a new study.

The study, published in journal Child Development, provides some of the strongest evidence yet that gesturing may have a unique effect on learning.

"Gesturing can be a very beneficial tool that is completely free and easily employed in classrooms. And I think it can have long-lasting effects," said Kimberly Fenn, study co-author and assistant professor of psychology at Michigan State University.

Fenn and Ryan Duffy of MSU and Susan Cook of the University of Iowa conducted an experiment with 184 second-, third- and fourth-graders in Michigan elementary classrooms.

Half of the students were shown videos of an instructor teaching math problems using only speech. The others were shown videos of the instructor teaching the same problems using both speech and gestures.

The problem involved mathematical equivalence which is known to be critical to later algebraic learning. In the speech-only videos, the instructor simply explains the problem.

In the other videos, the instructor uses two hand gestures while speaking, using different hands to refer to the two sides of the equation.

Students who learned from the gesture videos performed better on a test given immediately afterward than those who learned from the speech-only video.

Another test was given 24 hours later, and the gesture students actually showed improvement in their performance while the speech-only students did not.

While previous research has shown the benefits of gestures in a one-on-one tutoring-style environment, the new study is the first to test the role of gestures in equivalence learning in a regular classroom.

The study also is the first to show that gestures can help students transfer learning to new contexts such as transferring the knowledge learned in an addition-based equation to a multiplication-based equation.

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