Houghton Mifflin Co. News Release - September 19, 2007

Great Source Partners with Marshall Cavendish to Develop Singapore-based Mathematics Program

Innovative program bundles instructional materials with professional development

BOSTON — September 19, 2007 — Great Source, a division of Houghton Mifflin Company, one of the leading educational publishers, today announced plans to develop a new, alternative elementary math program in the United States, based on Singapore's top-rated elementary program, My Pals Are Here! Maths. The findings of Trends in International Mathematics and Science (TIMMS), which provide reliable data on the mathematics and science achievement of students in developed countries, rank students in Singapore as top in mathematics and science.

Together with Marshall Cavendish, a major educational publisher with a strong footprint in Asia, Great Source will have exclusive license to customize Singapore’s highly effective mathematics program for use in the United States. Dr. Richard Bisk, Andy Clark, Bob Hogan and Patsy Kanter will serve as consulting authors. Bisk and Hogan have each provided extensive professional development to educators about the Singapore approach. Clark and Kanter are well-known authors of other Great Source mathematics products, including the popular Every Day Counts^® and Summer Success^® : Math.

“This program is thoughtfully built on a concrete-to-visual-to-symbolic progression of instruction that focuses on teaching fewer topics in greater depth so that students have a solid understanding of the mathematics that is taught. The content will be adapted to closely align with the National Council of Teachers of Mathematics (NCTM) Focal Points,” said Susan Rogalski, Publisher, Great Source. “This focus and alignment, combined with ongoing support and professional development, will play key roles in successful implementation, program fidelity and delivery of results,” Rogalski added.

Professional development workshops will be offered this fall. The yet-to-be titled program is expected to release in spring 2008. For additional information, visit www.greatsource.com/imath.

About Great Source
Great Source publishes affordable, curriculum-based supplemental resources for students and teachers in grades pre-K through 12, as well as for parents and homeschoolers. With offerings in the core curriculum areas of reading, language arts, math and science, Great Source also publishes programs designed to meet specific initiatives such as summer school, afterschool, intervention, test prep and ESL. The company’s Web site can be found at www.greatsource.com or by contacting 800-289-4490.

About Houghton Mifflin
Boston-based Houghton Mifflin Company is one of the leading educational publishers in the United States, with more than $1.4 billion in sales. The Company publishes a comprehensive set of educational solutions, ranging from research-based textbook programs to instructional technology to standards-based assessments for elementary and secondary schools and colleges. The Company also publishes an extensive line of reference works and award-winning fiction and nonfiction for adults and young readers. In 2006, Houghton Mifflin merged with Riverdeep, bringing together one of the most respected print publishers with the leader in interactive courseware. With origins dating back to 1832, Houghton Mifflin combines its tradition of excellence with a commitment to innovation. To learn more about Houghton Mifflin, visit www.hmco.com.

About Marshall Cavendish
Marshall Cavendish is an international publisher that publishes books, directories, magazines and digital platform. With an extensive global network, Marshall Cavendish publishes in 13 different languages, encompassing a wide variety of interests ranging from education, home and library references, and business information. A publisher of choice and winner of numerous awards and accolades, Marshall Cavendish remains committed to its customers — bringing innovative, authoritative and attractive value-added products created by its rich pool of international talent. For more information please visit: www.marshallcavendish.com. Marshall Cavendish is a member of Times Publishing Limited.