Nwabueze Josephine Nneka


This study investigated the effects of Explicit Instruction (EI) and Concrete Representational Abstract (CRA) strategies on mathematics achievement of primary three pupils with dyscalculia in Federal Capital Territory (FCT) Abuja. The influence of gender on the pupils’ mathematics achievement was also investigated. Two research questions were raised and two hypotheses were formulated to guide the study. The study employed a quasi-experimental research design. The population for the study was all the 97 primary three pupils with dyscalculia as identified by the special education unit in Abuja Municipal Area Council (AMAC) local education authority Federal Capital Territory Abuja. Purposive sampling technique was employed to select the three inclusive public schools with a large number of children with dyscalculia. In the schools selected, three intact classes comprising 31 primary three pupils made up of 16 males and 15 females were used for the study. The instrument for data collection was a 10-item Mathematics Achievement Test (MAT). The instrument was face and content validated. The reliability index of the instrument (MAT) was established as 0.88 using the Kendall coefficient of concordance. Research questions were answered using mean and standard deviation while the hypotheses were tested at 0.05 level of significance using Analysis of Covariance (ANCOVA).The result of the study revealed that there is no significant difference between the mean achievement scores of pupils with dyscalculia in mathematics when exposed to EI and when exposed to CRA. The results further showed that there was no significant influence of gender on the mathematics achievement scores of pupils with dyscalculia, Based on the findings it was recommended that the use of EI and CRA strategy should be emphasized and integrated into the mathematics curriculum of teacher training tertiary institutions, so as to popularize the use among the teachers and that the government and stakeholders in both mathematics education and special needs education should organize workshops and seminars on the use of modern teaching techniques such as EI and CRA strategy for the in-service teachers.


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dyscalculia, explicit instruction, concrete representational abstract, mathematics, gender

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Adimora, D. E., Onyishi, C. N. & Nwokenna, E. N. (2014). Effect of strategic content learning on mathematics achievement of students with learning Disabiliy European Academic Research. 2, (3), 3151 – 3167.

Agrawal, J. (2013). The effects of explicit instruction with manipulatives on the fraction skillsof students with autism. An unpublished PhD dissertation submitted at George Mason University, USA.

Ajai, J. T. & Imoko, I. I. (2015). Gender differences in mathematics achievement and retention scores: A case of problem-based learning method. International Journal of Research in Education and Science (IJRES), 1 (1) 45 – 50.

Amazigo, J. C. (2000). Mathematics phobia diagnosis and prescription: 1st annual lecture held at National Mathematical Centre. Abuja, July.

Bryant, D. P., Bryant, B. R., Gersten, R., Scammacca, N., & Chavez, M. M. (2008). Mathematics intervention for first-and second-grade students with mathematics difficulties: The effects of Tier 2 intervention delivered as booster lessons. Remedial and Special Education. 29, 20 – 32.

Burney, S. L. (2015). Interventions to improve student achievement in mathematics for middle school students with autism. Thesis paper 10 presented at Georgia College and state University. Retrieved 12/01/2017 from

Clarke, B., Doabler, C. T., Smolkowski, K., Baker, S. K., Fien, H., & Cary, M. S. (2014). Examining the efficacy of a Tier 2 kindergarten mathematics.

Education Resource Center (ERC) Statistics (2015). Federal Capital Territory (FCT) Junior Secondary School Certificate Examination result from 2011 to 2014. ERC Abuja.

Gaurav R. W. (2001) E-Book, Summary “Dyscalculia from detection to diagnosis”. Retrieved on 12/05/2016 from

Jenkins, B. (2012). Does traditional or exploratory learning work better? Retrieved on 14/05/2016 from vs-explicitinstruction-word-learning

Lerner, J., & Johns, B. (2009). Learning disabilities and related mild disabilities: characteristics, teaching strategies and new directions. Boston: Houghton Mifflin Harcourt

Momoh, I. M. (2006). Effect of guided scoring strategy on students’ achievement and interest on quadratic equation. Unpublished. M. Ed thesis. University of Nigeria, Nsukka

Orim, R. E. & Igwe, B. (2017). Correlates of dyscalculia and learning outcome in mathematics among SSII students in Obudu, Cross River state Nigeria. British Journal of Education. 5 (8) 18 – 22.

Owolabi, J. and Adejoke, E. O. (2014). Effect of Gender, Age and Mathematics Anxiety on College Students’ Achievement in Algebra American Journal of Educational Research 2 (7) 474 – 476.

National Key Result Area NKRA (2010). Leading the Y generation to greater heights. Retrieved on 14/07/2015 from

Saad, T. U., Adamu, A. & Sadiq, A. M. (2014). The causes of poor performance in mathematics among public senior secondary school students in Azare metropolis of Bauchi State, Nigeria. Journal of Research & Method in Education. 4 (6) 32 – 40.

Strozier, S. D. (2012). The effects of concrete-representational-abstract sequence and a mnemonic strategy on algebra skills of students who struggle in mathematics. A Ph. D. dissertation submitted to the Graduate Faculty of Auburn University Alabama.

What Works Clearinghouse (WWC; 2009). Assisting students struggling with mathematics: Response to intervention for elementary and middle schools. Retrieved from

Witzel B. S. (2005). Using CRA to teach algebra to students with math difficulties in inclusive settings. Learning Disabilities: A Contemporary Journal. 3 (2) 49 – 60.

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