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An evaluation of the Mastering Fractions level-one videodisc program

Hasselbring, T.; Sherwood, B.; Bransford, J.
This report examined two studies on the effect of the videodisc program, Mastering Fractions (MF), on the fractions skills of secondary students. To examine the effect of the medium of instruction, the first study randomly assigned sixth grade students to receive instruction with MF material via videodisc or overhead projection. The scores from these two groups were compared to the scores of students who received instruction with an alternative program. The second study evaluated the effect of MF in different geographic locations and in schools of different sizes. All students were administered a battery of tests during the course of the intervention to measure changes in fraction skills. Results from the first study indicate that both groups of MF students recorded higher mean posttest scores than students in the control group. Additionally, students in the MF groups recorded larger pre-test to posttest gains than students in the control group. Results from the second study indicate that on average, all students demonstrated significant pre- to posttest gains. The largest gains were recorded in classrooms that completed all 35 lessons. (Copyright © 2011, National Institute for Direct Instruction (NIFDI). All rights reserved).
Research areas:
Main publication type:
Program Effectiveness
Mastering Fractions; videodisc program; math
DI News
Design type:
Pretest posttest control group design with random assignment, pretest posttest gain scores
Fidelity monitored:
Students included:
Secondary students, Caucasian students, African American students
Nashville, Tennessee, middle school, public school, North Carolina, Alabama, south
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