Derek Smith – författare

Exploring Mathematics gives students experience with doing mathematics - interrogating mathematical claims, exploring definitions, forming conjectures, attempting proofs, and presenting results - and engages them with examples, exercises, and projects that pique their interest. Written with a minimal number of pre-requisites, this text can be used by college students in their first and second years of study, and by independent readers who want an accessible introduction to theoretical mathematics. Core topics include proof techniques, sets, functions, relations, and cardinality, with selected additional topics that provide many possibilities for further exploration. With a problem-based approach to investigating the material, students develop interesting examples and theorems through numerous exercises and projects. In-text exercises, with complete solutions or robust hints included in an appendix, help students explore and master the topics being presented. The end-of-chapter exercises and projects provide students with opportunities to confirm their understanding of core material, learn new concepts, and develop mathematical creativity.

July 1, 1863. The Confederate Army of Northern Virginia under General Robert E. Lee advanced across the Pennsylvania countryside toward the small town of Gettysburg--less than 90 miles from Washington, D.C.--on a collision course with the Union Army of the Potomac. In Lee's ranks were 5,000 South Carolina troops destined to play critical roles in the three days of fighting ahead. From generals to privates, the Palmetto State soldiers were hurled into the Civil War's most famous battle--hundreds were killed, wounded or later suffered as prisoners of war. The life-and-death stories of these South Carolinians are here woven together here with official wartime reports, previously unpublished letters, newspaper accounts, diaries and the author's personal observations from walking the battlefield.

Savannah is one of America's most beautiful and historic cities. Yet underneath the mint juleps, oaks bearded with Spanish moss and the splendor of colonial architecture, there lurks a deadly undercurrent. This is a first-person account of an award-winning newspaper crime reporter's career, covering scores of murders in the Savannah area, including one of the bloodiest eras in the city's history: in 1985, metro Savannah earned notoriety with the nation's highest homicide rate. The author describes a wide range of crimes, including murders over a 14-year-old lover, $4 for hamburgers or a baby carriage; the grisly murder of a voodoo priest; bound corpses in the waterways and interstate body dumping grounds; the Scarecrow and "Say Cheese" Killers, serial killer Wade Sheffield; and many more.

Contains important tips, helpful resources and insights for you and your family to safeguard againist identity theft, online fraud, predators, and other potential threat in an increasingly risky world.

What makes The Maths Dictionary stand out from any other maths dictionary for KS2 children? For a start, it's far more than just a dictionary, it's an A to Z of key mathematical ideas and concepts for primary school children. Easily understood and absorbed, each entry includes clear illustrations and examples to assist children in developing their mathematical vocabulary. Written by a team of experienced classroom teachers, the dictionary is effective for group or individual use in the maths classroom. Its content has been chosen to include words within the capabilities of pupils in the primary and early secondary years of schooling. All words are relevant to the teaching and learning of maths in the National Curriculum. This dictionary will make a valuable addition to any classroom's collection of basic reference books and to every school's library of books on the subject of maths.