Hard cover. 8th Revised ed. Language: English. Pages: 616. Sewn binding. 616 p. This latest edition of Esler and Esler s popular text offers student-oriented comprehensive and well-balanced coverage of science content and methods. Users and reviewers have praised the appropriate blend of direct instruction and discovery techniques and the coverage of 17 areas of science. Each major topic heading and every lesson plan is tied to one of the National Science Education standards.