Is there an online textbook for 4th grade science?

An online textbook is available for fourth grade science on the Macmillan/McGraw-Hill website. Some school districts provide online access to their science textbooks with a user name and password, including the New York City and Tustin, California districts.

The Macmillan/McGraw-Hill online textbook contains curriculum on life science, earth science and physical science. Each curriculum section is divided into two units with an e-journal topic and two chapters as well as supporting lessons. The lessons have vocabulary games, review content with quizzes and some animated modules. Macmillan/McGraw-Hill also offers a California science textbook with a format similar to the general science textbook.