Students taught with Razalas' Method of Grouping achieved significantly higher gain scores than students in Individual Learning in Integral Calculus¶
Claim · All claims
Evidence · 1 study · causalr1·q2
Currency · newest study 2015 · not yet checked against its sources · not reviewed by a person
Subclaims¶
Reading the evidence codes
q is the design tier, i the impact, n the sample, and the kind with its r
the rigour judged within that kind: what each code means.
This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.
q2 i? A Mann-Whitney Test revealed a significant difference in gain scores between the control group (n=9) and the experimental group (n=21), with the experimental group's mean gain (14.33, high increase) exceeding the control group's (9, average increase). → Salazar 2015
Evidence¶
Salazar 2015¶
Salazar, D. A. (2015). Razalas' Grouping Method and Mathematics Achievement. Journal of Education and Practice, Vol.6, No.8. https://eric.ed.gov/?id=EJ1082724
q2 · i? · causal · r1
Quasi-experimental nonequivalent control group study with two existing Math 04 classes; Mann-Whitney Test on gain scores gave z=-1.79, significant at 0.05, with the experimental group showing "a high mean increase (14.33)" versus the control group's mean increase of 9.
"Results of the Mann-Whitney Test revealed that the Razalas Method of Grouping raised the students' scores in the achievement test in terms of their gain scores as evidenced by accepting the alternative hypothesis"
Discussion¶
Related Claims¶
- Students entered the Integral Calculus experiment with near-zero pretest scores, indicating weak prerequisite preparation — related
- First-year Calculus students taught with Microsoft Mathematics showed a larger pre-to-post test gain than conventionally taught controls — related
- Both groups improved significantly from pretest to posttest, and the experimental group's posttest scores significantly exceeded the control group's — related
- Qualitative data indicated the Razalas' Method of grouping developed self-confidence, encouraged effective communication and facilitated exchange of ideas toward a common goal — related
- Students taught with intensive practical activities gained far more from pre-test to post-test (mean gain 26.0) than conventionally taught students (mean gain 2.8) — related
- Both groups improved from pre-test to post-test, but the experiment group's within-group gains in mastery goal and achievement were larger than the control group's — related
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