Kids can learn about Chickweed or Stellaria media in this free activity pack from Learning Herbs. My girls love feeding this plant to our chickens.
Today and tomorrow kids can also check out the Herb Fairies Film Festival. This showcases videos that kids submitted who took the Herb Fairies course at Learning Herbs last year. It also features a free coloring page and poster download of Viola, the Violet Fairy.
Here's a little fairy dancing on a Violet leaf from my fairy blog post a couple years back.