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Direct linkZimpel, André Frank; Rieckmann, Torben – International Journal of Disability, Development and Education, 2022
Empirical evidence suggests a phonological loop deficit associated with Down syndrome. A trisomy 21 may be associated with a narrowing of visual attention to fewer than four objects at a time too. In a study with computer tachistoscopy, the hypothesis was confirmed in all 194 persons with trisomy 21. The subitising limit of persons with trisomy 21…
Descriptors: Down Syndrome, Genetic Disorders, Visual Perception, Learning Disabilities
Buczynski, Sandy; Gorsky, Jennifer; McGrath, Lynn; Myers, Perla – Teaching Children Mathematics, 2011
The concrete, pictorial, and abstract methods of this lesson give students access to investigate, isolate, define, and use prime numbers. In this article, the authors describe an enrichment lesson that offers opportunities to investigate prime numbers in concrete, pictorial, and abstract ways. Originally introduced by Jerome Bruner in 1960, the…
Descriptors: Numbers, Foreign Countries, Educational Opportunities, Mathematics Instruction
