The Samurai may have been the rock stars of the warrior class in medieval Japan, but the Ninjas were the secret agents. Known also as shinobi, which means "to steal away," Ninjas kept to the shadows and practiced espionage for their clan leaders. This exciting book details the history and skills of these stealthy, farming-class saboteurs who were masters of 18 warrior skills, including the martial art ninjutsu.

Shows how plant fossils can help to unlock clues to Earth's past, explaining how they form, how they are excavated, and how paleobotanists study them to learn about life millions of years ago.

Most people have heard of the massive collection of debris in the Pacific Ocean or the damaging effects of oil spills on ocean ecosystems. But there are many other ways the world�s oceans are being affected by pollution. This important title examines the sources of ocean pollution and the action being taken around the world to prevent pollution. Get inspired to take action in your community!

How do you move objects from one position to another? This fun book explains how a force, such as a push or a pull, can put an object in motion. Simple activities show how a force can move an object that is not moving or stop one that is.

How do you move objects from one position to another? This fun book explains how a force, such as a push or a pull, can put an object in motion. Simple activities show how a force can move an object that is not moving or stop one that is.

Soil Erosion and How to Prvent It helps young readers see the real impact of erosion on all life. This intriguing book describes the processes of weathering, erosion, and deposition, the impact of erosion on plants and animals, and kid-friendly steps to preventing erosion.

Unlike the rest of the people in her small town, Ruth Mornay does not believe that the death of her sixty-four-year-old neighbor Beatrice was an accident. Word has it that Bea was swept away by the flooded Teeswater River, but Bea was the head of the Teeswater River Embankment Rehabilitation Society, so Ruth knows her friend would never be so careless. Bea's godson Saul adds to Ruth's suspicions when he claims that Bea had premonitions about her murder and has left Ruth a box of clues to figure out what really happened. But what could a frog-shaped sprinkler, a mismatched pair of ladies' gloves, and an ugly flower picture made of human hair possibly have to do with Bea's death? That's the case Saul, Ruth, and Ruth's wayward pet chicken Dorcas, have to crack.

In the 1800s, the Underground Railroad was a system of secret routes and safe places to hide for black slaves trying to escape to freedom. This astonishing book details the evidence that led up to the acceptance of slavery as well as the rejection of it. Readers will discover that when faced with evidence of the plight of slaves, such as slave auction posters, engravings, photographs, and interviews, white people had varying views depending on whether they benefited from slavery themselves. Readers will learn how prejudice and circumstances at the time of an event can influence people's interpretation of evidence and how that perspective can change over time. They will also learn how to use critical thinking in their own examinations of evidence. Present-day examples show how history repeats itself when evidence is denied or interpreted to one side's benefit. "About this title" may belong to another edition of this title.

Read about unusual animal journeys around the world, from wandering saltwater crocodiles to invasive insect species and outbreaks of Australian plague locust. Interesting facts, unexpected outcomes, and human impacts on the journeys are highlighted.

"Read about unusual animal journeys around the world, from wandering saltwater crocodiles to invasive insect species and outbreaks of Australian plague locust. Interesting facts, unexpected outcomes, and human impacts on the journeys are highlighted."-- "About this title" may belong to another edition of this title.

Has Chris Dearing finally broken his family's run of bad luck? Find out in this hilarious, high-stakes companion to Mine! After a lifetime of bad luck, Chris Dearing is sure his family fortunes have finally turned around. With the help of some friends, he's reclaimed his granddad's old land in Dawson City, Yukon, and is adjusting to life with his new foster parents. While he waits for his dad to get out of jail -- and get sober -- Chris turns his attention to his next challenge: finding the gold that he knows is somewhere on his family's claim. What's standing in his way? A few things: a) he doesn't know a thing about gold mining, and it turns out there's a lot more to it than a pan in a creek; b) Lucy, the attack goose guarding the local junkyard; c) the fact that Family Services keeps getting in the way; d) two Filthy Rats trying to swindle Chris's dad out of the gold; oh, and last but not least, e) the rumours that Chris's grandfather didn't actually find his gold -- he stole it. The stakes are high and the hijinks even higher in this touching, witty companion to Mine!

Presents general information about fossils, explaining how they are formed, how they are extracted from the sites where they are discovered, and how scientists use them to gain an understanding of Earth's past.

Minerals are chemicals that are the building blocks of rocks. Metals, crystals, and gemstones are all minerals found in rocks. This interesting book describes how to identify minerals, where they can be found, the rock cycle process, the uses of minerals, and how they are mined.

Motion is a change in an objects position. This fascinating title explains in a clear, simple way how objects are moved by a change in energy. Simple activities show young readers how energy is changed by applying a force, either by coming in contact with an object or by a force that does not touch it physically, like gravity.

Marking the 100th anniversary of World War I, this series takes a detailed look at the course of events in the Great War and the conflict's lasting impact on the world. Includes documents, artifacts and first-person accounts that will help young readers relate to the subject, as well as informative sidebars, short biographies, fact boxes, timelines and stimulating text-dependent questions that will keep readers engaged and motivated. Simultaneous.