The idea is that students write briefly about what is close to their heart, with the most important things in the center. The one thing that I changed though is that I think student choice for their heart is important. So the children pick either the Hallmark Valentine's Day heart, or an outline of a real heart for their heart map.
Background or Foreground?
My motivation has changed for using them however. The original intention is to use them throughout the year to help generate ideas for stories and poems. Now we use heart maps as an integral part of our values study.