Arthur's New Baby Book

Arthur's New Baby Book, subtitled A Lift-the-Flap Guide to Being a Great Big Brother or Sister is an Arthur Playbook by Marc Brown. It is a lift-the-flap book that introduces Baby Kate Read while also showing readers how to be a good big brother and sister and that they are still loved even when there is a new member of the family.

Publisher's summary
Lift, look and learn with Arthur how to be a great big brother or sister!

''New baby in the family? This lift-the-flap book shows older siblings what to expect, how to play with Baby, and how to have fun being helpful. It also helps children understand that they are still loved, even though the new baby is getting a lot of attention!''

''More than 40 flaps to open with surprises underneath! (An adult may need to open the flaps the first time the book is used.)'' (From the back of the book)

''Arthur remembers D.W. as a baby and teaches her how she can be a helpful and loving big sister to Baby Kate. With nursery rhymes to sing and special ABC flaps to flip to make learning the alphabet easy, Arthur shows you that being a big brother or sister is fun!'' (From Amazon.com)

Plot
Grandma Thora tells Arthur and D.W. that there's someone at the door and that it must be Mr. and Mrs. Read home from the hospital with a surprise from them. D.W. wonders what kind of surprise you can get from the hospital and underneath the flap are Mom and Dad with Baby Kate. D.W. is excited because she thinks that she can play with Baby Kate every day, but Baby Kate only cries, sleeps, eats and poops. D.W. declares that babies are boring, but Arthur tells her that she was like that too, when she was just a baby. Then, he says, they started having a lot of fun together. She loved her jack-in-the-box, made him laugh by putting her foot in her mouth and wearing Dad's hat, and made herself laugh with her stuffed bunny, Pinkie. Her favorite game was peek-a-boo, with him. He taught her an alphabet using her favorite things. He asks her how many she remembers, and she says that she remembers them all, such as "G" for Arthur's glasses and "W" for her wagon.

He taught her nursery rhymes, including "Sing a Song of Sixpence," "Humpty Dumpty," "Peter, Peter, Pumpkin Eater," "Little Miss Muffet" and "I See the Moon." After they get done talking about this, Grandma Thora shows everyone a present that just came for Baby Kate - a stuffed bunny. Arthur says that she'll love it because it's floppy ears, which are presented as holes that the reader can stick their fingers through to make them wiggle. D.W. moans that nobody cares about her because they only love the baby now, but Mom and Dad tell her to open the door because they have something for her. Behind the door-flap, Mom and Dad give her hugs and kisses and tell her that even though they love the new baby, they'll never stop loving her.