Puerto Rican Labor History 1898-1934 presents a history of the organized labor movement in Puerto Rico from the United States' colonial domination of the island in 1898 to the Great Depression in the early 1930s. Although the most prominent Puerto Rican labor leaders in the early twentieth century were strongly influenced by revolutionary European socialist and anarchist ideology, the organized labor movement as represented by the Federacion Libre de los Trabajadores de Puerto Rico and the Partido Socialista became a fundamentally reformist trade unionist campaign that relied heavily on the democratic rights guaranteed by the United States government and the support of the American Federation of Labor. Rather than advocating for the overthrow of capitalism, the abolition of private property and the wage labor system, and its replacement by a socialist egalitarian cooperative society free of centralized government authority, the organized workers' movement focused on the immediate struggle for higher wages and better working conditions by means of the organization of labor and participation in electoral politics.

The Academic Encounters Second edition series uses a sustained content approach to teach skills necessary for taking academic courses in English. There are two books for each content area. Academic Encounters Level 2 Student's Book Listening and Speaking: The Natural World engages students through interviews and academic lectures on stimulating topics from the fields of earth science and biology. Other topics featured are the atmosphere, Earth's water supply, and life processes common to all living things. Students develop crucial listening and note-taking skills, discuss content, conduct interviews, and make presentations. Student's Book comes with online access to video for all academic lectures. The topics correspond with those in Academic Encounters Level 2 Reading and Writing: The Natural World. The books may be used independently or together.

A paired skills series uses a sustained content approach to teach skills necessary for taking academic courses in English. Academic Encounters Level 2 Teacher's Manual Listening and Speaking: American Studies contains general teaching guidelines for the course, task by task teaching suggestions, answers for all tasks, audio and video scripts, and unit quizzes and quiz answers.

Academic Listening Encounters: American Studies offers a sustained content approach to help students develop the listening, note-taking, and discussion skills necessary to succeed in English-speaking academic environments. The Teacher's Manual for this title contains general teaching guidelines for the course, task by task teaching suggestions, answers for all tasks, lecture quizzes and quiz answers, and the listening script for the audio program.