- The life cycle of reptiles, Darlene R. Stille
- Water pollution, by Darlene R. Stille
- Trucks, by Darlene Stille
- Hadrosaurus, by Darlene Stille
- Eleanor Roosevelt, first lady and civil rights activist, written by Darlene R. Stille ; illustrated by Reed Sprunger
- Light, by Darlene R. Stille
- Deserts, by Darlene R. Stille
- Extraordinary women scientists, by Darlene R. Stille
- Sound, by Darlene R. Stille
- Tropical rain forests, by Darlene R. Stille
- Natural resources, using and protecting earth's supplies, by Darlene R. Stille ; content adviser, Jim Walker ; science adviser, Terrence E. Young, Jr. ; reading adviser, Susan Kesselring
- The digestive system, by Darlene R. Stille
- Architects of the Holocaust, by Darlene R. Stille
- Plant cells, the building blocks of plants, by Darlene R. Stille
- Puerto Rico, by Darlene R. Stille
- Ships, by Darlene R. Stille
- Television, by Darlene R. Stille ; content adviser, Sherry L. Field ; reading adviser, Linda D. Labbo
- Good food, good for earth, by Darlene R. Stille
- Metamorphic rocks, recycled rock, by Darlene R. Stille
- Erosion, how land forms, how it changes, by Darlene R. Stille
- Extraordinary women of medicine, by Darlene R. Stille
- The life cycle of amphibians, Darlene R. Stille
- Changing habits, living green, by Darlene R. Stille
- Boats, by Darlene R. Stille
- The Capitol Building, Darlene Stille ; illustrated by Todd Ouren ; content consultant Richard J. Jensen
- The nervous system, by Darlene R. Stille ;[reading consultant, Linda Cornwell ; science consultant, Ronald W. Schwizer]
- Atoms & molecules, building blocks of the universe, by Darlene R. Stille
- The emergence of modern America (1890-1930), by Darlene Stille
- Mercury, by Darlene R. Stille
- Motorcycles, by Darlene R. Stille
- Race cars, by Darlene R. Stille ; content adviser, Sherry L. Field ; reading adviser, Linda D. Labbo
- The ice age, by Darlene R. Stille
- Trains, by Darlene Stille
- I am a seal, the life of an elephant seal, by Darlene R. Stille ; illustrated by Todd Ouren
- Indiana, by Darlene R. Stille
- Bulldozers, by Darlene Stille
- Weather, Darlene R. Stille
- Mars, by Darlene R. Stille
- Freight trains, by Darlene R. Stille ; content adviser, Sherry L. Field ; reading adviser, Linda D. Labbo
- Octopuses, Darlene R. Stille
- Magnetism, by Darlene R. Stille
- Blimps, by Darlene Stille
- Jackie robinson, amazing athlete and activist, written by Darlene R. Stille ; illustrated by Richard Stergulz ; content consultant, Hoyt Purvis
- Oil spills, by Darlene R. Stille
- Helicopters, by Darlene R. Stille
- Cheetahs, by Darlene R. Stille
- Minerals, from apatite to zinc, by Darlene R. Stille ; content adviser, Jim Walker ; science adviser, Terrence E. Young, Jr. ; reading adviser, Susan Kesselring
- Anne Hutchinson, Puritan protester, by Darlene R. Stille
- Igneous rocks, from fire to stone, by Darlene R. Stille
- The greenhouse effect, by Darlene R. Stille