Booklist, starred review, 2015
Shelf Awareness for Readers, starred review, 2015.
National Science Teachers Association outstanding book for 2014.
THE SEVEN SEAS
Best Children's Books of the Year, Bank Street, 2012
THE MYSTERIOUS UNIVERSE
Kirkus, starred review, May, 2008.
Golden Kite Honor book, March, 2009.
Bank Street College of Education, Best Children's Books of the Year, 2009.
Cornerstones of Science, superb science book nominee, 2008.
Named a "Cream of the Crop" title for 2009 (Maine Regional Library System).
Cooperative Children's Book Center (CCBC) Best Books of 2009.
Capitol Choices Noteworthy Books For Children and Teens, 2009.
Middle School CALIFORNIA COLLECTION, California Readers, 2011.
Prairie Pasque, S.D. Children’s Book Award Nomination, 2010-2011.
Publisher's Weekly, starred review, July, 2005.
Recommended Book, Animal Protection Society of Durham, NC.
Kirkus, starred review, August, 2005.
Booklist, starred review, August, 2005.
Instruction Magazine's "top picks," Oct/Nov, 2005.
Parents' Choice Gold Award, Parents' Choice Foundation, Fall, 2005.
Best Books for the Holidays, Seattle Public Library, 2005.
Selected as a Notable Book by the Sacramento City Unified School District, 2005.
Henry Bergh Children's Book Award for Illustration, Association for the Prevention of Cruelty to Animals, 2005.
Master list for 2006-2007 Black-Eyed Susan Award, Maryland.
"Growing Good Kids--2006 Excellence in Children's Literature Award", given by the Junior Master Gardener Program and the American Horticultural Society.
Kirkus, starred review, May, 2001.
Winner of the Parents’ Choice 2001 Children’s Gold Award.
Storytelling World Magazine Award (chosen from 3000 other contenders), 2002.
LOOKING FOR LIFE IN THE UNIVERSE
School Library Journal, starred review, December, 2002.
Booklist, starred review, December, 2002.
Selected as a 2002 NSTA-CBC Outstanding Science Trade Book for Children.
Selected for the John Burroughs List of Outstanding Nature Books for Young Readers for 2002.
Children's Literature Choice List, 2003.
Society of Midland Authors Children's Non-fiction Award, First runner-up, 2002.
Named a Nonfiction Favorite by the National Endowment for the Humanities, 2014.
TURN OF THE CENTURY
Booklist, starred review, July, 1998.
Kirkus, pointered review, summer, 1998.
ABA Pick of the Lists, Fall, 1998.
Texas Bluebonnet Award Master List.
1999-2000 Children's Literature Top Choice List.
1998 Read America! Collection Choice, 1998.
1999/2000 Charlotte Award Reading List.
2000/2001 Children's Crown Award nominee.
Instructor Magazine's 71 Top Books of the Century (nonfiction), 2001.
2000-2001 Kentucky Bluegrass Award Master List.
2000/2001 Utah Children's Informational Book Award nominee.
2001 Beehive Award, Children's Literature Association of Utah.
PBS Recommended book for teachers, social studies.
Named to the 2005 California Collections of excellent books written by California authors.
On December 4 and 5, 1999, this book was featured nationally on CSPAN2.
Featured in Great Books For Girls by Kathleen Odean.
Chosen as a "children's favorite" by the children of Seattle, 1997.
Children's Book Award Nominee in South Carolina and Colorado for 1996-97.
Children's Book Award Nominee in Nevada for 1997-98 and Pennsylvania for 1998-99.
Mentoring USA, Recommended Reading List.
Combined Awards-Recognized Standards Literature List, Indiana, 2000.
Named one of the 100 Best Books for Children, by The Children’s Advisory Commission of Indiana County, 2009.
Favorite Books, The Kentucky Council on Economic Education, winner in the category of choices, wants, work, and service.
Performed as a musical by Stages Theatre, Minneapolis, MN, 2006. Repeat performance in 2013.
MONSTERS IN MY MAILBOX
Chosen 1996 "Book of the Year" by Family Fun magazine from more than 600 other contenders.
Featured on the Today show.
Optioned by Story Labs, UK, for a full length feature animated film, 2012.
THE PRECIOUS GIFT
American Booksellers Association Pick Of The List for spring, 1996.
Pointered review, Kirkus, March, 1996.
THE SPRING EQUINOX
Cooperative Children's Book Center (CCBC) Choice List, 2003.
THE SUMMER SOLSTICE
Los Angeles' 100 Best Books of 2001 selected by the L.A. Unified Library Services.
Bank Street College Children's "Books of the Year."
Society of School Librarians International Honor Book for 2001.
THE AUTUMN EQUINOX
IRA-Los Angeles' Unified School District's 100 Best Books.
THE WINTER SOLSTICE
IRA/CBC Children's Choices Book, 1995.
IT'S BACK TO SCHOOL WE GO!
2004 NCSS-CBC Notable Children's Trade Book in the Field of Social Studies.
SOMETIMES BAD THINGS HAPPEN
2002 Capitol Choices Noteworthy Books For Children.
2002 Parents' Guide Children's Media Award, Shenandoah University.
THE CUPCAKE THIEF
2008 NCSS-CBC Notable Social Studies Trade Book for Young People.
2012 Selected Law Day Book, Texas Hispanic National Bar Association (HNBA).
2012 Featured Law Day Book, Houston Bar Association.
BROWN COW, GREEN GRASS, YELLOW MELLOW SUN
Featured in the New York Times Sunday Book Review, 1995.
Selected by Child magazine as one of the best picture books of the year, 1995.
100 Best Books for Toddlers, ParentDish Picks, 2011.
THE TREE OF LIFE
Resources for Independent Thinking, Critical and Independent Thinking for Children, Recommended Book.