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. Author manuscript; available in PMC: 2012 Apr 1.
Published in final edited form as: J Dev Behav Pediatr. 2011 Apr;32(3):250–263. doi: 10.1097/DBP.0b013e318209edef

Figure 2.

Figure 2

Fluency scores for identifying and combining quantities associated with sets of objects (e.g., ▪▪▪) and Arabic numerals (e.g., ▪▪▪ + 2 = 5) from first to fifth grade, inclusive. Brackets are standard errors. LIQ = Low IQ, MLD = mathematical learning disability, LA= low achieving, TA = typically achieving.