I don’t think there is a [u]requirement[/u] that fractions for early grades be done spatially. The restrictions for 3rd grade math mainly involve using tactile drawings rather than braille dots to show shapes, number lines, etc. Transcribe fractions according to the rules of the Nemeth Code. The Code says (section 70b) that when fractional notation is first presented to the reader, as in the lower grades, or when there is any other special need, any fraction [u]may[/u] be represented spatially.