Abstract
Kayla was a 15 years old girl with Down syndrome attending a special education school in Indonesia. A modification of Wright et al.’s (2006) approach to assessment documented her number knowledge and arithmetical strategies. This paper discusses the assessment process and the results focusing on her ability to solve number problems. Results show that Kayla’s stages in early arithmetical learning and base ten arithmetical strategies are the same as those of typical developing students of a much younger age. This supports the notion that a student with Down syndrome may be capable of learning arithmetic similar to that learned by typical developing children, but their speed of learning appears to be much slower.
Rumi Rumiati