- Insects and spiders
- Sound, [written by] Joseph Midthun ; [art by] Samuel Hiti
- Endangered animals of the oceans
- Birds, World Book
- World Book looks at the sea and its marvels
- The internet, written by Echo Elise González ; illustrated by Graham Ross
- Fish, World Book
- Wild animals
- Fighting sickness, Joseph Midthun
- Mollusks and similar sea creatures
- Magnetism, [written by] Joseph Midthun ; [art by] Samuel Hiti
- Resources & cumulative index
- Grizzlies and other bears, [writer, Shirley A. Petersen]
- Animal structure and classification, Joseph Midthun, Samuel Hiti
- Mammals, World Book
- Producing and obtaining food
- Mixtures and solutions, written by Cassie Meyer ; illustrated by Maxine Lee-Mackie
- Mercury and Venus
- Jellyfish and other stingers, [writer, Joseph K. Brennan]
- Plant and animal adaptations, Joseph Midthun ; Samuel Hiti
- Animal babies
- Division
- Amphibians
- The World Book student discovery science encyclopedia, v. 4 D-F
- Telescopes and space probes
- Endangered animals of Europe
- Swans and other swimming birds, [writer, Steven A. Horak]
- Electricity, [written by] Joseph Midthun ; [art by] Samuel Hiti
- Our amazing bodies
- Butterflies of the United States and Canada
- Play sports!
- Christmas in America in the 1700's and 1800's
- Grasshoppers and their relatives, [writer, Patricia Brennan]
- Subtraction, Joseph Midthun, Samuel Hiti
- Christmas in Austria and its capital, Vienna
- Frogs and other amphibians, [book author: Sheri Reda]
- Freshwater life of the United States and Canada
- Chemistry and matter, written by Cassie Meyer ; illustrated by Maxine Lee-Mackie
- Christmas in Italy and Vatican City
- World of pets
- Oceans, islands, and polar regions
- Order in coding, written by Echo Elise González ; illustrated by Graham Ross
- The World Book student discovery science encyclopedia, v.2
- The sun and other stars
- Endangered animals of Australia, New Zealand, and Pacific islands, A. J. Smuskiewicz
- Green transportation
- Lobsters and other crustaceans, Christina Johnson
- Christmas in Belgium
- Christmas in Scotland, Christmas around the world, from World Book
- Coding languages, written by Echo Elise González ; illustrated by Graham Ross