Great Source, a division of Houghton Mifflin, publishes curriculum-based supplemental resources for pre-K–12.

Great Source products include kit-based programs and flexible resources for reading, writing, math, science, and English learners; curriculum kits for summer school and afterschool; state-specific test preparation; and award-winning mathematics courseware.

Research-based and solutions oriented, these materials can be used as alternatives to core programs as well as supplements, allowing educators to tailor instruction to the specific needs of their students and boost the effectiveness of their overall instructional approach.

Write Source^® language arts programs offer effective guidelines for developing strong writing and communication skills.

iSucceed MATH™ is a premier data-driven math intervention solution combining technology and print for students who have not yet mastered the fundamentals of mathematics in the early grades.

Organized by month to follow the elements in Every Day Counts® Calendar Math, the new edition of Practice Counts includes daily written practice sets covering everything from arithmetic to geometry, measurement patterns, and problem solving.

Daybooks of Critical Reading and Writing for grades 2–12 help students build critical reading, writing, and thinking skills with engaging reader-response lessons packed with quality fiction, nonfiction, and poetry selections.

Highly interactive Great Source Professional Development workshops offered across the country provide educators with hands-on training that expands their skills and helps them meet students' diverse learning needs.

> Find additional products on the Great Source website