- M is for Monkey
- Ma première histoire de Belgique
- Mad About Bugs
- Mad About Deadly Creatures
- Mad About Dinosaurs
- Mad About Dinosaurs!
- Mad About Minibeasts!
- Mad About Sharks
- Mad About Space
- Mad About Whales and Dolphins
- Made for Each Other: Why Dogs and People Are Perfect Partners
- Maggie the One-Eyed Peregrine Falcon
- Maggie, el último elefante en Alaska
- Maggie: Alaska's Last Elephant
- The Magic School Bus Presents: Dinosaurs: A Nonfiction Companion to the Original Magic School Bus Se...
- The Magic School Bus Presents: Insects: A Nonfiction Companion to the Original Magic School Bus Seri...
- The Magic School Bus Presents: Our Solar System: A Nonfiction Companion to the Original Magic School...
- The Magic School Bus Presents: Planet Earth: A Nonfiction Companion to the Original Magic School Bus...
- The Magic School Bus Presents: Sea Creatures: A Nonfiction Companion to the Original Magic School Bu...
- The Magic School Bus Presents: The Rainforest: A Nonfiction Companion to the Original Magic School B...
- The Magic School Bus Presents: Volcanoes & Earthquakes: A Nonfiction Companion to the Original Magic...
- Magic School Bus Presents: Wild Weather
- Magnetic Magic
- Magnets
- Magnets Push, Magnets Pull
- Magnificent Creatures
- Mai ke Poʻo a ka Hiʻu (Hawaiian)
- Make a Splash
- Make It Move
- Make it Move
- Making an Ocean Ecosystem
- Making Contact!
- Making It Go: The Life and Work of Robert Fulton
- Making Maps
- Making Shade
- Making Water Safe
- Making Waves: Saving Our Ocean
- Malice, el perro abandonado - Malice, le chien abandonné
- Mama Built a Little Nest
- Mama Dug a Little Den
- Mama Gloria's Rainbow Fruit Salad
- Mama Gloria's Sunflower Garden
- Mama Miti
- Mammoth and Mastodon
- Manfish
- Manual de supervivencia para chicos
- Map Candy
- Map It!
- Mapas de la Vía Láctea
- Mapas de nuestra nación
- Mapas de nuestro mundo
- Mapas y globos terráqueos
- Maple Trees
- Mapping and Navigation
- Mapping Earth
- Mapping Our Nation
- Mapping the Milky Way: Read-along ebook
- Marie Curie
- Marie Curie: Pioneering Physicist
- Marine Science for Kids
- Mario and the Hole in the Sky
- Mario y el agujero en el cielo / Mario and the Hole in the Sky
- Marjory Saves the Everglades
- Mars
- Mars Boy
- Mars Explorer
- Mars! Earthlings Welcome
- Marshmallow Pie 2-book Collection, Volume 1
- Marshmallow Pie 2-book Collection, Volume 2
- Marshmallow Pie The Cat Superstar in Hollywood
- Martin Gardner's Science Magic
- Martin Luther King Jr.
- Mary Anning
- Mass and Weight
- Matarel le gentil Dino'
- Mathematics Year 5
- Matarel le gentil Dino'
- Mathematics Year 5
- Mathematics Year 6
- Maths Adventure Stories: Haley Comet and the Calculon Crisis
- Maths Adventure Stories: Infinity Squad to the Rescue
- Maths Adventure Stories: The Mysterious City of El Numero
- Maths Adventure Stories: The Mystery of the Division Dragon
- Maths Made Easy Ages 5-6 Key Stage 1 Advanced
- Maths Made Easy Dictionary Ages 5-8 Key Stage 1
- Maths on the Go
- Maths — No Problem! Addition and Subtraction, Ages 5-7 (Key Stage 1)
- Maths — No Problem! Collection of 6 Workbooks, Ages 4-6 (Key Stage 1)
- Maths — No Problem! Collection of 6 Workbooks, Ages 5-7 (Key Stage 1)
- Maths — No Problem! Extra Challenges, Ages 4-6 (Key Stage 1)
- Maths — No Problem! Extra Challenges, Ages 5-7 (Key Stage 1)
- Maths — No Problem! Fractions, Ages 5-7 (Key Stage 1)
- Maths — No Problem! Geometry and Shape, Ages 4-6 (Key Stage 1)
- Maths — No Problem! Geometry and Shape, Ages 5-7 (Key Stage 1)
- Maths — No Problem! Measuring, Ages 4-6 (Key Stage 1)
- Maths — No Problem! Multiplication and Division, Ages 5-7 (Key Stage 1)
- Maths — No Problem! Multiplication, Division and Fractions, Ages 4-6 (Key Stage 1)
- Maths — No Problem! Numbers to 10, Ages 4-6 (Key Stage 1)
- Maths — No Problem! Numbers to 100, Ages 4-6 (Key Stage 1)
- Matter
- Matter Change States
- Max at Night
- Max Planck: Uncovering the World of Matter
- Maíz se dibuja
- Me and My Place in Space
- Measuring the Weather
- Medical Milestones and Crazy Cures
- Meet Our Solar System: A Rhyming Children's Book About Sun, Moon, & The Planets. Fun Facts & Picture...
- Meet the Clown Fish: A 15-Minute Book
- Meet the Dolphin: A 15-Minute Book
- Meet the Minibeasts
- Meet theMultiples
- Mega Machines