Discusses integrated learning systems (ILSs) and describes a study that considered the degree of linear relationship between time spent on the ILS and outcome achievement on ninth-grade algebra students. The effects of previous math and verbal achievement and sex differences are explored, and measurement instruments are described. (Contains 14…

The usefulness of the Iowa Algebra Aptitude Test (IAAT) as a predictor of student achievement in secondary mathematics courses was studied. Subjects were 977 students from 7 Iowa schools in grades 6 through 9. Data collected included their IAAT scores and Iowa Tests of Basic Skills (ITBS) mathematics skills test scores, as well as data about…