Spatial visualization, reading, spelling, and mathematical abilities in second- and third-grade children.
D000367:Age Factors; D002648:Child; D004521:Educational Measurement; D005260:Female; D006801:Humans; D007360:Intelligence; D007802:Language; D007858:Learning; D008297:Male; D008433:Mathematics; D011581:Psychological Tests; D011932:Reading; D014796:Visual Perception