Steven F. Korte

Delta Education LLC publishes science manipulative and other curricular materials. It manufactures curriculum based elementary school science kits. The firm offers science education by providing hands-on science programs and materials that are correlated to National Science Education Standards (NSES) and state standards. The company was founded by Tom Richardson in 1974 and is headquartered in Nashua, NH.

HMH Supplemental Publishers, Inc. provides core and supplemental educational materials and instruction programs to the K-12 and adult markets. The firm operates through its Rigby (reading and comprehension), Saxon (math, phonics, and early learning), and Steck-Vaughn (vocabulary, fluency, phonics, and test preparation) imprints. The company operates as part of Reed Elsevier's global Harcourt Education division. It was founded by Gabriele Madison, Julie A. McGee, Henry Z. Horbaczewski, Timothy J. McEwen, Martijn Tel, Kenneth E. Fogarty on September 11, 1992 and is headquartered in Orlando, FL.

Pasco Scientific develops science education software. It products include sensors, software, bundles, interfaces, SPARK element, laboratory equipment, supplies, and replacement parts. The company was founded by Paul A. Stokstad in 1964 and is headquartered in Roseville, CA.