Who makes apps? When was the internet invented? How do we use social media in our daily lives? Find answers to these questions and more in Digital Planet. This informative series introduces readers to the technology of daily life. Bright, full-color photographs complement the carefully leveled text to make reading for understanding easy and fun. Each title includes a table of contents, infographic, glossary, index, Did You Know? sidebars that provide additional information, and reading tips for teachers and parents.