Parasaurolophus is known for the trumpet-shaped crest on its head, which makes a low sound similar to the one elephants or whales make when communicating among their species. Readers learn this and other interesting facts about this dinosaur, such as what it ate, the places it called home, and how it survived among predators. This compelling material is presented through an age-appropriate text to enhance students knowledge of these prehistoric creatures. Readers uncover additional information in captivating fact boxes, colorful illustrations, and well-organized diagrams. This text keeps readers entertained while also aligning with a fundamental science curriculum topic.
Here children can explore the diverse range of habitats and biomes that our planet has to offer. Through accessible language and an innovative design, readers can learn about the range of amazing habitats in our world and how each of them is used by the animal kingdom.
Learn about the diverse and vibrant festivals that are celebrated around the world. This series encourages children to consider religious beliefs and cultural practices via easy-to-read text and informative full-colour images.
Ruby on Rails enables the rapid production of high-quality web applications, allowing developers to focus on application creation while Rails manages the intricacies. This award-winning book has guided tens of thousands of developers, endorsed by the Rails core team. New users will find step-by-step instructions, while experienced developers will access comprehensive insider knowledge. The book has evolved alongside Rails, starting with a walkthrough of building a real application and delving into Rails features. This edition offers enhanced information on the Ruby language and elaborates on key concepts. It keeps pace with changing best practices, featuring examples of cookie-backed sessions, HTTP authentication, and Active Record-based forms, emphasizing the correct application of Rails. It also reflects the substantial functional and performance improvements of Ruby 1.9. Sam Ruby, a notable software developer and co-chair of the W3C HTML Working Group, brings his expertise, along with Dave Thomas, an author of the Agile Manifesto and "Programming Ruby," who understands both agility and Ruby. David Heinemeier Hansson, the creator of the Rails framework, also contributes to this essential resource for developers.
His exciting series explores all there is to know about some of the most amazing dinosaurs to have walked planet Earth. With easy-to-read text and informative diagrams, this series provides a simple yet engaging introduction to the world of dinosaurs.
You want to write professional-grade applications: Rails is a full-stack, open-source web framework, with integrated support for unit, functional, and integration testing. It enforces good design principles, consistency of code across your team (and across your organization), and proper release management. But Rails is more than a set of best practices. Rails makes it both fun and easy to turn out very cool web applications. Need Ajax support, so your web applications are highly interactive? Rails has it built in. Want an application that sends and receives e-mail? Built in. Supports internationalization and localization? Built in. Do you need applications with a REST-based interface (so they can interact with other RESTful applications with almost no effort on your part)? All built-in. With this book, you'll learn how to use ActiveRecord to connect business objects and database tables. No more painful object-relational mapping. Just create your business objects and let Rails do the rest. Need to create and modify your schema? Migrations make it painless (and they're versioned, so you can roll changes backward and forward). You'll learn how to use the Action Pack framework to route incoming requests and render pages using easy-to-write templates and components. See how to exploit the Rails service frameworks to send emails, implement web services, and create dynamic, user-centric web-pages using built-in Javascript and Ajax support. There is extensive coverage of testing, and the rewritten Deployment chapter now covers Phusion Passenger. As with the previous editions of the book, we start with an extended tutorial that builds parts of an online store. And, of course, the application has been rewritten to show the best of Rails V2.
