In 1981 a meta-analysis of research in science education was completed by a team of researchers under the direction of Ronald Anderson at the University of Colorado. Individual teams synthesized the extant research using meta-analysis procedures. One of the syntheses showed that the post-Sputnik or "new" science programs on the whole…

Student outcomes were assessed by quantitatively combining results of 57 reported evaluations of three major curriculum programs in elementary school science. Thirty-two percent of the comparisons were statistically significant, favoring activity-based programs; six percent favored control groups. (DH)