Awards and Honors

Wiley and the Hairy Man, Notable Book Award, American Library Association, 1977

The Grey Lady and the Strawberry Snatcher, Notable Book Award, American Library Association, 1980

The Grey Lady and the Strawberry Snatcher, Caldecott Honor Book, 1981

The Grey Lady and the Strawberry Snatcher, illustration honors, Boston Globe/Horn Book, 1980

Ten, Nine, Eight, Caldecott Honor Book, 1983

Ten, Nine, Eight, Kate Greenaway Honor, 1983

The Paper Crane, illustration honors, Boston Globe/Horn Book, 1986

The Paper Crane, Hans Christian Andersen Award nomination, 1988

The Paper Crane, illustration award, International Board on Books for Young People

Dawn, illustration honors, Boston Globe/Horn Book, 1984

Goose, The School Library Journal Best Book Award, 1996

Goose, Horn Book Fanfare Selection

Common Ground, Giverny Award for Best Science Picture Book for Children, 1998

When Sophie Gets Angry—Really, Really Angry, Caldecott Honor Book, 2000

When Sophie Gets Angry—Really, Really Angry, Charlotte Zolotow Award, 2000

When Sophie Gets Angry—Really, Really Angry, Jane Addams Peace Award, 2000

Little Rat Sets Sail, Picture Book Honor Award, Boston Globe-Horn Book Award, 2002 (with Monika Bang-Campbell)

Little Rat Sets Sail, Children’s/Young Adult Honors, Massachusetts Book Award, 2003 (with Monika Bang-Campbell)

My Light, New England Book Award, New England Booksellers Association, 2004

My Light, Notable book award, American Library Association, 2005

My Light, Massachusetts Book Award, 2005.

Little Rat Makes Music, Center for Children's Books, Blue Ribbon Book Award, 2007 (with Monika Bang-Campbell)

Living Sunlight: How Plants Bring the Earth to Life, AAAS/Subaru SB & F Prize for Excellence in Science Books, Children's Science Picture Book, 2010 (with Penny Chisholm)

The Lucy Daniels Award for "outstanding contributions to children's literature that supports social and emotional health." Bookmarked! Festival, 2011.

Ocean Sunlight: How Tiny Green Plants Feed the Seas, AAAS/Subaru SB & F Prize for Excellence in Science Books, Children's Science Picture Book, 2013 (with Penny Chisholm)

Goose, The Phoenix Award, 2016