摘要:This study investigated the effect of school librarians’ involvement on pupils’ production of learning materials in mathematics. The study adopted a quasi-experimental nonequivalent control group design. The sample of the study comprised of one hundred and twenty (120) primary five pupils drawn by simple random sampling techniques from four primary schools in Oji- River Local Government Education Authority of Enugu State. The four schools were assigned to experimental and controls groups respectively. Six research questions and six null hypotheses guided the study. The null hypotheses were tested at 0.05 level of significant. The instrument used for data collection was researchers -made Mathematics Achievement Test basically on geometry aspect of Mathematics. The instrument was validated by five experts. Achievement Test was trial-tested to determine its internal consistency using the K-R0 (Kuder Richardson) procedure and this yielded a reliability estimate of 0.80. Estimate of temporal stability for Mathematics and Achievement Test was also determined using Pearson Product Moment Correlation and the coefficient of 0.79 was obtained. Mean, Standard Deviation and Analysis of Covariance (ANCOVA) were used for the analysis. Major findings of the study indicated that involving school librarians on pupils’ production of learning materials significantly enhanced their achievement in Mathematics.