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Three-Level Block Structure, Undated
Three Lower School children work on a block structure with three levels of symmetrical design elements, undated.
Four-Tiered Block Structure Detail, Undated
Detail view of a large, complex block structure that displays understanding of pattern, symmetry, balance and design--undated.
Four-Tiered Block Structure, Undated
Large, complex block structure that displays understanding of pattern, symmetry, balance and design-undated.