This set from Alpha Omega includes individual Lifepac workbooks from the Science series. Different grade levels and units that cover the topics needed for an Astronomy course were individually selected to assemble this set. The five science Lifepacs included are: Grade 6, Unit 8; Grade 6, Unit 9; Grade 7, Unit 3; Grade 7, Unit 4; and Grade 9, Unit 7. The Lifepacs are the same ones included in the grade-level sets, but they are compiled in this set to focus on Astronomy. A teacher’s guide is included with the five workbooks, which includes an answer key for each Lifepac, as well as an alternative test. Completion of this course is equivalent to a half credit in Astronomy.