The cycle of seasons on Earth is as interesting as it is important to the way we all live. From the cold of winter to warm summer days, it s essential to understand just what s happening and why we always have the same weather at the same time of the year. Readers will learn what the sun s rays are doing to different parts of Earth at different times as well as the importance of Earth s axis, or tilt. With great photographs, diagrams, and detailed...

Introduces young readers to the tractors used on farms, discussing what they do, how they operate, and why their job is important to farmers.

Explains how hedgehogs got their name even thought they are not hogs, and describes their closest relatives, where they live, their anatomy, including their remarkable quills, their enemies, their diet, their young, and hedgehogs as pets.

Introduces young readers to the harvesters used on farms, discussing what they do, how they operate, and why their job is important.

"If you saw a reptile's scales up close, could you guess what animal they belonged to? What about sharp teeth or long claws? In this uniquely laid out book, readers learn the characteristics of reptiles and then are introduced to several different kinds. First, an up-close photograph highlight some special feature of the reptile, such as a fat tail or long snout, and fun facts start to describe the reptile's habits and home. Readers only need to turn...

There may be no bird's plumage more recognizable than the pink feathers of the flamingo! But, if you saw, its feathers super close up, could you still guess the bird? Readers learn all about many kinds of birds through uniquely formatted photographs and science content. They'll first encounter a full-color close-up of some cool feature of a bird, such as a webbed foot or sharp beak, and a bit of information about the bird. When they turn the page,...

Anyone who has ever tried to plant a garden-or even grow a plant-knows it's not always an easy task. That's why farmers do what they can to ensure a healthy crop, and that includes cultivating the soil. They till it, allowing air, nutrients, and water to circulate more easily. Doing this by hand would be nearly impossible on some farms, so farmers use some fantastic machines to aid them. Readers will love learning about the big machines called cultivators...

An introduction to the human brain.

Describes the physical characteristics, habitat, and diet of guinea pigs.

An introduction to the human heart.