[share_ebook] A Closer Look at Plant Classifications, Parts, And Uses

You are probably about to teach or take a “?rst course in proof techniques,” or maybe you just want to learn more about mathem- ics. No matter what the reason, a student who wishes to learn the material in this book likes mathematics, and we hope to keep it that way. At this point, students have an intuitive sense of why things are true, but not the exposure to the detailed and critical thinking necessary to survive in the mathematical world. We have written this book to bridge this gap. In our experience, students beginning this course have little training in rigorous mathematical reasoning; they need guidance. At the end, they are where they should be; on their own. Our aim is to teach the students to read, write, and do mathematics in- pendently, and to do it with clarity, precision, and care. If we can maintain the enthusiasm they have for the subject, or even create some along the way, our book has done what it was intended to do. Reading. This book was written for a course we teach to ?rst and second year college students. The style is informal. A few problems require calculus, but these are identi?ed as such. Students will also needtoparticipatewhilereadingproofs,proddedbyquestions(such as, “Why?”). Many detailed examples are provided in each chapter.

North Korea strictly limits contact between its citizens and the outside world. Rare occasions, such as the North Korean Mass Games, offer a glimpse of what's often called the secret state. The country typically broadcasts an image of a strong and unified people, but what is the daily reality of life in North Korea? In this look at a major current events topic, state propaganda, defector's accounts, and other annotated quotes highlight conflicting reports. The country's political, economic, and military history is presented through detailed main text, fascinating sidebars, and historical and contemporary images.

Formalizing study of the natural world may seem like a daunting task considering the sheer breadth and variety of living things that inhabit the planet.

Although we often search social and historical documents for clues to our past, biological "documents" perhaps hold the most important evidence of our heritage. The traits we inherit from our parents and pass on to our offspring are encoded in our genes and DNA and reveal much about both our origins and our future.