Molly’s Family by Nancy Garden
Plot Summary: The members of Ms. Marston's kindergarten class are cleaning and decorating their room for the upcoming Open School Night. Molly and Tommy work on drawing pictures to put on the walls. Molly draws her family: Mommy, Mama Lu, and her puppy, Sam. But when Tommy looks at her picture, he tells her it's not of a family. "You can't have a mommy and a mama," he says. Molly doesn't know what to think; no one else in her class has two mothers. She isn't sure she wants her picture to be on the wall for Open School Night.
Youtube link: https://www.youtube.com/watch?v=Kl1StVtbk2g
The fact that Molly has two moms becomes the conflict of the book when a classmate tells her that it is not possible to have two moms. But with a little support from her moms and her teacher, who tell her there’s all different sorts of families, she has a great time at Open School Night with her moms. My only critique is that the book spends maybe a little too long insisting that you can’t have two moms, before its supportive conclusion.