Bøger af Rebecca Pettiford

What keeps us from floating away? Earth's gravity! This invisible force keeps our feet on the ground and the moon in our sky. This title introduces young students to the awesome power of gravity, on our planet and in the black holes in galaxies far away.

Energy makes our world move! Heat, motion, electricity, and food are just a few ways kinetic and potential energy impact our daily lives. In this fact-filled book, students will learn the basics of what energy is and how it works.

"Relevant images match informative text in this introduction to snowplows. Intended for students in kindergarten through third grade"--

"Relevant images match informative text in this introduction to zambonis. Intended for students in kindergarten through third grade"--

A drum and a chute make a concrete mixer unique from other construction equipment. The first part has a spiral-shaped inside for mixing concrete. The second part shoots concrete out of the machine. Beginning readers will want to turn the pages of this title about concrete mixers!

Many big rigs can also be called 18-wheelers. These long transport machines need eighteen big wheels to support a tractor front and trailer back. This title revs young readers up as it unloads information about the parts and purpose of big rigs.

"Simple text and full-color photography introduce beginning readers to bull sharks. Developed by literacy experts for students in kindergarten through third grade"--

"Simple text and full-color photography introduce beginning readers to lemon sharks. Developed by literacy experts for students in kindergarten through third grade"--

Reindeer are migrating masters whose hooves change to tackle the different seasons of their Arctic home! In winter, hard, fur-covered hooves protect their feet from the snow and cold. As the ground thaws, their hooves become soft to make walking much easier. Travel across the northernmost biome and learn about the many adaptations of reindeer in this low-level title.

No, Arctic hares are not wearing mascara! Their long, black eyelashes help these snow white hares see across the glaring white snow and ice. Learn all about how Arctic hares live in their freezing home in this title highlighting their many adaptations.

Burrowing deep under the snow, collared lemmings use their shovel-like claws to create a secret world of tunnels hidden from predators. These small rodents put on their white winter coat each fall to blend in with their snowy home. Early readers will love digging through the pages of this fun, fact-filled read about the adaptations of collared lemmings.

From special tears that protect their eyes in salty seawater to their migrations for feeding and giving birth, harp seals have many special adaptations for thriving in their freezing home. Find an explanation for how harp seals survive in the Arctic on each page of this vibrant title!

"Simple text and full-color photography introduce beginning readers to basking sharks. Developed by literacy experts for students in kindergarten through third grade"--

What may look like a leaning mailbox or a poorly fitted window sill may actually be a warning of danger below! In this engaging title, young readers will learn all they need to know about these surprise disasters. Special features such as a map, a profile, a severity chart, and a formation graphic offer even more information about these surprise disasters!

Arctic foxes are master hunters of the north! These small predators use their keen sense of hearing to listen for the rustlings of lemmings under the snow. Then, they leap to break through the layers of white to snatch their prey! This title walks readers through the fascinating adaptations Arctic foxes have developed to survive this harsh biome.

"Simple text and full-color photography introduce beginning readers to hammerhead sharks. Developed by literacy experts for students in kindergarten through third grade"--

Did you know all the air you breathe in passes through a special filtration system? It is one of the many ways the respiratory system keeps your body running smoothly! In this title, leveled text explains how the respiratory system works both inside and outside the body while vibrant photos and diagrams keep young readers engaged.

Reaching speeds of more than 80 miles per hour, avalanches plow down mountain slopes and flatten everything in their paths! Discover major avalanche danger zones, how these disasters form, how they are rated, and a profile of a devastating past disaster in this title covering catastrophic avalanches!