What if there's no prior knowledge to activate

            Activating students’ prior knowledge is one of those edu-speak phrases so often repeated that it has in many ways lost all meaning and functions only as a square on satirical faculty meeting bingo cards.

The intention is good.  New information can be more readily understood and remembered if it can be assimilated with material that already resides in long-term memory.  For example, if I needed directions to somewhere in downtown Durham, NC, I would ask where it was in relation to Fullsteam Brewery.  I have a very clear mental image of that area and can easily build onto it, despite my nearly tragic lack of directional sense.  I once missed the entire state of Virginia.  True story.

Unfortunately, the places with which I am that familiar are very few, and my map reading skills are purely theoretical.  When I first moved to Athens, GA, from Chicago, I needed to buy a shower curtain, so I called the local Target store and asked for directions.  

The clerk asked, “Do you know where the mall is?” 

I said, “No.” 

She tried again, “Do you know…” 

I said, “Let me save you some time.  I’ve lived here about sixteen minutes.  I don’t know where anything is.”  We eventually worked it out. 

The prior knowledge activation technique that I hear used most often is to ask students, “What do you know about ______?”  And the problem is that many of our students don’t know anything about the topic.  Asking them, “What do you know about Ancient Egypt?” is analogous to asking me where the mall is. 

Actually, it’s worse.  I absolutely knew that I had no idea where the mall was.  Our kids often think they know things when in fact they don’t or the things they know are complete fiction.

            According to Dr. David Sousa, author of How theBrain Learns among other titles, we tend to remember best the first and last things presented to us in a learning session.  That means students need to receive only correct information initially.  The use of the above technique or the much-beloved KWL chart may explain why students give those same wrong answers on the end-of-unit test, despite weeks of instruction.

            It may be more useful to plan your lessons with an eye toward creating a schema, as opposed to activating prior knowledge.  Consider, for example, Ancient Egypt.  Rather than asking students what they know, present them with an image like this one.  Better yet—give them an assortment of images. 

Now ask them simply to observe: “What do you see?” This can be done individually, in small groups, or as a whole class.  Make certain to limit students’ contributions at this point to what is objectively present in the image.  No interpretations or value judgments just yet.

When students have exhausted their observations, ask them, “Based on what you see, what do you think is going on?” 

Finally, ask students to consider what questions persist for them.  “What are you still wondering about?”

This activity, called See-Think-Wonder, is taken from the superb book Making Thinking Visible,  I like that it allows students to craft an accurate mental framework on which to attach the material they will be studying.  Later in the unit, the teacher can refer back to the images rather than spending a great deal of time explaining a concept.  Because the students were allowed to ponder the images for a considerable amount of time, they are apt to be remembered and serve as useful shorthand. 

Perhaps more importantly, it presents academic material as a puzzle to be solved.  Cognitive psychologist Dan Willingham, author of Why Don’t Students Like School?, explains that people like puzzles and will keep at them provided they believe they have a reasonable chance of success. If you have ever persisted at a difficult crossword or Sudoku, you know this is true.