This is a great way to post the alphabet in your classroom. This website also has a ton of wonderful ways to teach the alphabet. This meets standard command of the conventions of standard English grammar and usage when writing or speaking.
When it's too hot to go outside and to early to go to the beach why not try to lost the children in a labyrinthe made with Kapla or Pencils ? Who knows, you may have some time for yourself while they are stuck.