Yvonne S. Freeman is the coauthor or coeditor (with David E. Freeman) of 11 Heinemann books, including: - ESL Teaching: Revised Edition (2016) - Essential Linguistics, 2d ed. (2014) - Between Worlds: Access to Second Language Acquisition, 3d ed. (2011) - La ensenanza de la lectura y la escritura en espanol y en ingles en clases biling^D"ues y de doble inmersion, segunda edicion revisada ed. (2009) - Academic Language for English Language Learners and Struggling Readers (2009) - Diverse Learners in the Mainstream Classroom (2008) - Teaching Reading and Writing in Spanish and English in Bilingual and Dual Language Classrooms, 2d ed. (2006) - Dual Language Essentials for Teachers and Administrators (2005) - Closing the Achievement Gap (2002) - Teaching Reading in Multilingual Classrooms (2000) - ESL/EFL Teaching (1998) Yvonne is a professor emerita at the University of Texas Rio Grande Valley. Yvonne and David Freeman are Heinemann Professional Development Providers. David E. Freeman is the coauthor or coeditor (with Yvonne S. Freeman) of 11 Heinemann books, including: - ESL Teaching, Revised Edition (2016) - Essential Linguistics, 2d ed. (2014) - Between Worlds: Access to Second Language Acquisition, 3d ed. (2011) - La ensenanza de la lectura y la escritura en espanol y en ingles en clases biling^D"ues y de doble inmersion, segunda edicion revisada ed. (2009) - Academic Language for English Language Learners and Struggling Readers (2009) - Diverse Learners in the Mainstream Classroom (2008) - Teaching Reading and Writing in Spanish and English in Bilingual and Dual Language Classrooms, 2d ed. (2006) - Dual Language Essentials for Teachers and Administrators (2005) - Closing the Achievement Gap (2002) - Teaching Reading in Multilingual Classrooms (2000) - ESL/EFL Teaching (1998) David is a professor emeritus at the University of Texas Rio Grande Valley. David and Yvonne Freeman are Heinemann Professional Development Providers. Dr. Sandra Mercuri is an Assistant Professor at the University of Texas, Brownsville. She has over 18 years of experience in teaching in Argentina and the United States in K-12 schools and at the college level. She teaches courses in bilingual education and biliteracy and is working on research on the development of academic language across the content areas, the role of language in the development of scientific literacy and the effect of long-term professional development for teachers of English learners. She provides training for teachers nationwide and presents at national and international conferences on issues of second language acquisition and bilingualism, dual language education, teacher training and ESL strategies. Dr. Mercuri has also published articles in professional journals about bilingual learners and the application of second language theories into classroom practice in the TESOL Quarterly, Talking Points, EJLTS and the NABE journal as well as professional journals in Spanish such as GIST. Dr. Mercuri is the author of the book titled Supporting Literacy Through Science. She has also co-authored the books Closing the Achievement Gap and Dual Language Essentials with Drs. Yvonne and David Freeman and Research-based Strategies for English Language Learners with Denise Rea. Dr. Mercuri a native of Argentina is a fluent speaker of Spanish.