Effectiveness of lab-work learning environments in and out of school: A cluster randomized study

•Successful implementation of cluster randomized field trial in science education.•Intervention study shows effects on 9th graders science achievement and motivation.•Stronger effects in state than trait motivation.•The out of school setting is more effective in motivational gains.•Teaching in school is more effective in learning achievement.

The issue of how to increase student motivation and achievement in science subjects is considered to be a major challenge in modern school systems. Lab-work learning environments in which students get direct (“hands-on”) experience with science content that is related to their everyday lives are posited to have positive effects on state/trait motivation and achievement, but there is a lack of sound empirical evidence to support this claim. In the present study, the effectiveness of a lab-work learning unit on the topic of “the chemistry of starch” was examined by applying a cluster randomized field study with three treatment conditions with lab-work elements and a control group. The first group was taught with lab-work elements in School only, the second group (SCOL & school) was taught in a combined condition encompassing both a SCOL (Science Center Outreach Lab) visit and classroom learning, the third group was taught entirely outside the school environment (SCOL only), and the fourth group was a wait-list control group, which was not exposed to a “starch” curriculum at the time of this study. Data from 1854 students were gathered in 67 ninth-grade classes on state motivation during the intervention and on trait motivation and achievement at pretest, posttest, and follow-up. Multilevel regression analyses revealed several differences between the lab-work conditions and the control group: Whereas the hands-on practical approach effectively enhanced state motivation with positive effects on joy, situational interest, situational competence, and reduced boredom in all three treatment conditions (School only, SCOL & school, and SCOL only), there were differences in trait effects: learning at school (School only and SCOL &school) increased achievement (posttest and follow-up), whereas the SCOL visit resulted in a small and spurious increase in trait motivation (reduced cost and increased competence beliefs only on the posttest).