This competency matrix matches the primary and intermediate Science Unlimited lessons with the established competencies which appear in the Science Unlimited competency continuum. Primary lessons deal with: investigating dripping faucets; classification/sorting; smell; eyes; color; air; weather; observation and description; mystery boxes; change; simple machines; measurement; electricity; magnetism; thermometers; life cycles; animals; and other topics. Intermediate lessons deal with: ice and water; chemistry; color; geology; weather; sound; evaporation; floating things; simple machines; bouncing objects; heat loss; ecology; oceanography; nutrition; seasons; and other topics. For each lesson the process, attitudinal, and content competencies are identified. Then the video model, lessons, and the six most commonly used elementary science textbook series are keyed to indicate how they deal with these prestated competencies. This arrangement makes it possible for schools using Science Unlimited to key their textbooks and to use them for the content component. (By the opening of the 1985-86 school year, this matrix will include the remaining text series in common use in Pennsylvania schools, as well as listings of computer software.) (JN)