This site is focused on the context of talking about the family and includes a video and a worksheet. This video explores the vocabulary and structures of family, age, marriage and family celebrations. The grammar areas of focus are on usage of the verb ser and tener, including TENER AÑOS to tell age. Because of the video content, Firefox users may want to use another browser since it has been know to have problems with the plugin.

Biology 2e is designed to cover the scope and sequence requirements of a typical two-semester biology course for science majors. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Biology includes rich features that engage students in scientific inquiry, highlight careers in the biological sciences, and offer everyday applications. The book also includes various types of practice and homework questions that help students understand—and apply—key concepts. The 2nd edition has been revised to incorporate clearer, more current, and more dynamic explanations, while maintaining the same organization as the first edition. Art and illustrations have been substantially improved, and the textbook features additional assessments and related resources.

By the end of this section, you will be able to do the following:

List the components of the endomembrane system
Recognize the relationship between the endomembrane system and its functions

Practice writing out in Spanish the numeric times indicated in the exercise. Great spelling review of Spanish numbers. Answers may be corrected at the end of the exercise.

This first of four lessons on "ser" and "estar" explains the fundamental differences between the two verbs. Perfect for beginning students, the lesson is easy to understand with plenty of examples. A short quiz, oral exercise and test at the end of the lesson evaluates the student's mastery of this grammar principle. Have students click on the printer-friendly page to copy and save notes in their Spanish folder. Teacher can set up accounts and monitor progress on quizzes and tests.

Excellent explanation of the uses of "ser." The lesson is easy to understand, with ample examples. A short quiz, oral exercise, and test at the end of the lesson evaluates the student's mastery of this grammar principle. Teachers can set up accounts to monitor student progress on quizzes and tests for free. Includes printer-friendly grammar summary for student notebook.

Great explanation of how to conjugate the six irregular verbs in the present subjunctive: dar, estar, haber, ir, saber, and ser. A quiz at the end of the lesson tests the student's mastery of irregular conjugations in the present subjunctive.