Using the  items that make up a science class magnet (wire, a nail, and a small dry  cell battery) as examples, explain the factors that affect the strength  of a magnet.
 •Your goal is to make the strongest magnet possible.  Using the science  class magnet materials again, describe what changes you would make to  the magnet construction to make the magnet as strong as possible while  keeping the assembly as small as possible.
 •Include the advantages and disadvantages of the changes you recommend.