As volunteer Spectra Art Mom for my daughter's Kindergarten classroom, I have to come up with art lessons every month or so. In the past, I've helped children work on art projects for a school auctions.
Perhaps you've read about the "Flowers In Vase" auction art project?
For the auction projects I've been able to work with a ratio of 1:1 or 1:3 ...my cup of tea. However, this year has been a new kind of adventure. Usually I'm blessed with at least one parent volunteer, but we'll just say that I have a whole new appreciation for how hard our teachers work. With 31 kids in one class, I can get...well... a bit overwhelmed. One site I find very helpful for art lesson ideas is the Deep Space Sparkle blog. This past fall I turned to her tutorial on doing Portraits with Kindergarteners.
As for the anxiety I feel when so many little paint filled hands reach in the air for help, it is also accompanied by so much love. I get waves and hugs in the hallways. "Look! There's my art teacher! I love her!" Last month a boy looked me in the eyes and said, very genuinely, "Thank you for being here today." Last week a little boy gave me a big hug and said, "You're the best art teacher ever!" So in the end it is totally worth it, sweaty palms and all.