This project has a cross-sectional research design and generated evidence that is descriptive [design research and observational], associative/correlational [analytic essay and quasi-experimental], and experimental [propensity score matching]. Original data were collected on first generation, Spanish speaking children from relatively poor families (plus a small number from the campus center) using assessments of learning, observation [videography], and survey research [self-completion questionnaires and structured interviewer-administered questionnaires].
Instruments or measures being used varied, including theoretically generated questions, pretest-posttest training design, coding of science notebooks that were kept over time, etc. In all cases, efforts were made to obtain responses from a large enough N to ask whether results were comparable. Many of the analyses are done; remaining ones involve the latest round of testing.