As the foremost leaders in educational technology and intervention support, we’re committed to accelerating achievement for every student and turning lives around for even the most challenged learners.

Do The Math —1–5


Do The Math® is a flexible, modular intervention program created by Marilyn Burns that helps students develop the skills they need to compute with accuracy and efficiency, the number sense they need to reason, and the ability to apply their skills and reasoning to solve problems.

MATH 180 —5–12


MATH 180 is designed to address the needs of struggling students and their teachers equally. The instructional design uses adaptive software to provide students with personalized instruction and practice while equipping teachers with an ecosystem of support.

iRead —K–2


iRead® is an adaptive, digital, foundational reading program designed to close the achievement gap early and place all children on a predictable path to reading proficiently by third grade. iRead is a flexible solution that fits into all K–2 literacy block schedules and enhances the effectiveness of any core reading curricula.

System 44 —3–12


System 44® is an intensive, foundational reading program for the most challenged readers. The program ensures that struggling students master the system of 44 sounds and 26 letters of the English language by integrating multiple assessments, multiple entry points, adaptive software, and targeted instruction.

READ 180 —4–12


READ 180® Universal is the leading blended-learning solution that accelerates learning for struggling readers by merging the latest in brain science and adaptive software. Designed for students reading two or more years below grade level, READ 180 personalizes instruction for students and provides powerful data for differentiation.

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Do The Math®, FASTT Math®, MATH 180®, iRead®, System 44®, READ 180®, HMH®, and Houghton Mifflin Harcourt®, are registered trademarks of Houghton Mifflin Harcourt.