Firefly & Fern

Lois L. Sando

Ages 5–10survivalnature

Sally Crabtree, Robertha Mathieuson

Ages 3–7animalsfood chains

Robert Bender

Ages 4–8food chainsnature

Mick Manning, Brita Granstrom

Ages 3–7naturefood chains

Heidi Moore

Ages 5–10food chainsocean life

Gwendolyn Hooks

Ages 5–10food chainsmarine ecosystems

Paul Fleisher

Ages 7–12natureecology

Paul Geraghty

Ages 3–7natureecosystems

Kathleen Weidner Zoehfeld, Priscilla Lamont

Ages 4–8naturegardens

John Seidensticker, Susan Lumpkin

Ages 9–12naturewildlife

Liam O'Donnell

Ages 6–11sciencenature

Sally Crabtree, Roberta Mathieson

Ages 4–8animalsnature

Anne Capeci, Joanna Cole, Capeci Anne, Éric Chevreau

Ages 7–12natureecology

Betsy Franco

Ages 4–8ecologyfood chains

Heidi Moore

Ages 6–10natureecosystems

Gwendolyn Hooks

Ages 5–10food chainsarctic ecosystems