Part of a course for the revised Cambridge First Certificate English examination. The course aims to provide a combination of motivating material and systematic development of language and exam skills, and consists of 12 topic-based units.

Learn how to use R to turn raw data into insight, knowledge, and understanding. This book introduces you to R, RStudio, and the tidyverse, a collection of R packages designed to work together to make data science fast, fluent, and fun. Suitable for readers with no previous programming experience, R for Data Science is designed to get you doing data science as quickly as possible. Authors Hadley Wickham and Garrett Grolemund guide you through the steps of importing, wrangling, exploring, and modeling your data and communicating the results. You'll get a complete, big-picture understanding of the data science cycle, along with basic tools you need to manage the details. Each section of the book is paired with exercises to help you practice what you've learned along the way. You'll learn how to: Wrangle—transform your datasets into a form convenient for analysis Program—learn powerful R tools for solving data problems with greater clarity and ease Explore—examine your data, generate hypotheses, and quickly test them Model—provide a low-dimensional summary that captures true "signals" in your dataset Communicate—learn R Markdown for integrating prose, code, and results

Part of a course for the revised Cambridge First Certificate English examination. The course aims to provide a combination of motivating material and systematic development of language and exam skills, and consists of 12 topic-based units.

The trusted Gold series builds students' confidence by combining carefully graded exam preparation for the Cambridge English exams with thorough language and skills development. Providing enjoyable, communicative classes with a strong emphasis on personalization, Gold is the popular choice for teachers around the world. Digital teacher resources are now available for Gold Pre-first, to accompany and supplement your teaching. Contact your local representative to request a copy. You can find your local office here. Please note, these are available in digital format only.

Police hunt for a gang called the India-Rubber Men, who wear gasmasks and rubber gloves, and carry gas bombs to stave off pursuit. The book was made into the successful 1938 film, "The Return of the Frog."

The principles of general chemistry, stressing the underlying concepts in chemistry, relating abstract concepts to specific real-world examples, and providing a programme of problem-solving pedagogy.