Why Hands-on Tasks are Good

by Kathie F. Nunley

Tactile, or 'hands-on', activities benefit everyone and should be plentiful and encouraged with all students. The reason for this relates to the two different memory systems in our heads. One is called the semantic memory and the other is the episodic memory. They are actually in two different locations in the brain.

Semantic memory is composed of those things we have specifically set out to learn and remember, such as "who was the 1st president of the United States?" or "how many stars are there on the flag?" Or, "what is 6 times 3?" All of us were taught the answers to these questions and we intentionally set out to remember them. We stored them in our semantic memory.

But if I ask you "what did you have to eat last night?" or "where were you last Christmas?" Or "what is your most memorable birthday?" You would also be able to answer these questions. But why? Did you specifically set out to remember what you had for dinner last night in anticipation that I would ask you today? Did you go to bed repeating it over and over? No of course not, yet you remember it easily. This is information that is stored in your episodic memory (think of it as the 'episodes' of your life). It is our autobiography of everything that has happened to us. It is unintentionally remembered.

These two systems are linked or networked together and often one will help us with the other. We know that they are completely separate in the brain however, because in some instances a person will lose one but not the other. In Alzheimer's disease, people tend to lose their episodic memory but not their semantic. So although they don't know if they have children, they do remember that there are 50 stars on the flag.

When I tell people I'm a biology teacher they usually reply..."Ughhh, all I remember about biology is that we had to dissect frogs". I find it fascinating that I get this response from so many people, even if it's been 40 years since they were in high school. Why do they remember the frogs? Possibly because it was one of the few hands-on events that they experienced that year.

It is by understanding the relationship between these two memory stystems that we can see the true advantage to using "hands-on" activities in the classroom. They target both memory systems and the students have a better chance for retention.

Kathie F. Nunley is an educational psychologist, author, researcher and speaker living in southern New Hampshire. Developer of the Layered Curriculum® method of instruction, Dr. Nunley has authored several books and articles on teaching in mixed-ability classrooms and other problems facing today's teachers. Full references and additional teaching and parental tips are available at: http://Help4Teachers.com Email her:
Kathie (at) brains.org

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