- A-maze-ing Natural Phenomena
- A-To-Z Animal Alphabet
- A-Z Animals: Running, Leaping, Playing
- A.I.
- Abayomi, the Brazilian Puma
- Abbi's American Adventures: Mission Control Mix-up
- ABC
- ABC for Me: ABC Earth-Friendly Me
- ABC ZooBorns!
- ABC's of Biology
- ABC's of the Universe
- ABCDEspaço
- ABChemistry
- ABCs from Space
- ABCs of Biochemistry
- ABCs of Biology
- ABCs of Chemistry
- ABCs of Earth Science
- ABCs of Oceanography
- ABCs of Physics
- ABCs of Science
- ABCs of Space
- About Habitats: Rivers and Streams
- Above The Earth
- Accidentes Geográficos
- Acorn to Oak Tree
- Across The Solar System With Max The Astronaut
- Active Learning on the Go: Little Baby Bird Learns to Count Book 1
- Activități pentru copii isteți. Inginerie
- Activități pentru copii isteți. Știință
- Ada's Violin
- Addition and Subtraction
- Addition Fun With Math Mazes
- Adelita, A Sea Turtle's Journey
- Adventures in Nature
- Adventures In The Forest
- African Grasslands
- After Dark
- After the Dinosaurs
- Agricultural Engineering and Feeding the Future
- Agua segura para todos
- Aircraft Carriers
- Akvarie, Grøn Fagklub
- Albert Einstein and Relativity for Kids
- Albert Einstein Was a Dope? (Wait! What?)
- Albert Einstein: A Curious Mind
- Albert Einstein: Gentle Genius
- Albă ca Zăpada și cei șapte pitici
- Alexander von Humboldt
- Alfred Wegener: Uncovering Plate Tectonics
- Algebra - Drill Sheets
- Algebra - Task & Drill Sheets
- Algebra - Task & Drill Sheets Gr. 3-5
- Algebra - Task Sheets Gr. 3-5
- Algebra - Task Sheets Gr. PK-2
- Alguien ha estado aquí, alguien lo ha hecho: descifrando las señales de los animales
- Alice the Kangaroo
- Alien Invaders
- Alien Invaders: Rockhead & Infernox (2 Books in 1)
- Alinhavos
- All About Earthquakes (A True Book: Natural Disasters)
- All About Energy
- All About Heat Waves and Droughts (A True Book: Natural Disasters)
- All About Hurricanes (A True Book: Natural Disasters)
- All About Light and Sound
- All About Mechanical Engineering
- All About Mitosis and Meiosis
- All About Solar Eclipses
- All About Tornadoes (A True Book: Natural Disasters)
- All About Volcanoes (A True Book: Natural Disasters)
- All About Wildfires (A True Book: Natural Disasters)
- All Kinds of Hair
- All That Trash
- Alla scoperta dell'Universo
- Allie's Ride
- Alligators and Crocodiles
- Alligators and Crocodiles Can't Chew!
- Alone in the Arctic
- Alpha Force: Hunted
- Alphanatomy
- Am I a Frog?
- Amazing 3-D: Kittens
- Amazing 3-D: Puppies
- Amazing Amphibians
- Amazing Animals
- Amazing Animals: Strange Animal Partnerships: Multiplying Fractions: Read-along ebook
- Amazing Arctic and Antarctic Projects
- Amazing Armadillos
- Amazing Biome Projects
- Amazing Dogs with Amazing Jobs
- Amazing Kitchen Chemistry Projects
- Amazing Machines: Busy Bulldozers
- Amazing Machines: Remarkable Robots
- Amazing Machines: Tremendous Tractors
- Amazing Places
- Amazing, Crazy and Weird Bugs and Insects
- Amazon Rainforest
- Amazon Rainforest Research Journal
- Amazon Rainforest: A Guide in Rhyme
- American Culture
- American Paint Horse
- Amphibians and Reptiles: A Compare and Contrast Book
- An ABC of Flowers
- An Alphabet of Western Birds
- An Anthology of Intriguing Animals
- Analyze It!
- Anatomicum
- Anatomy & Physiology Part 1: Bones, Muscles, and the Stuff That Connects Bones and Muscles
- Anatomy & Physiology Part 2: Body Systems
- Anatomy and Physiology for Kids! The Human Body and it Works: Science for Kids - Children's Anatomy ...
- Ancient Animals: Plesiosaur
- Ancient Underground Structures
- Andar por la ciudad
- Andar por la escuela
- Anfibios y Reptiles: un libro de comparación y contraste
- Angry Birds Playground: Animals
- Angry Birds Playground: Dinosaurs
- Angry Birds Playground: Question and Answer Book
- Angry Birds Playground: Rain Forest
- Animal A - Z Action Book