Complete Curriculum gives you access to online textbooks in Math, Science, Language Arts and Social Studies for K-12. The textbooks are accessed as online .pdf files for the student and teacher’s editions. Each book is organized into 180 lessons containing mostly text and pictures. Some worksheet assignments within lessons can be typed into. Many lessons contain ideas for hands-on activities. For $29.95, you get access to 10 textbooks of your choice for one year. You can also purchase individual books for $19.95.