Kindergarten culture in the family and kindergarten: a complete sketch of Froebel's system of early education, adapted to American institutions. For the use of mothers and teachers
A teacher's manual by William N. Hailmann, published in Cincinnati and New York in 1873, explaining Froebel's kindergarten method to American mothers and teachers. The wood-engraved figures show numbered building-block arrangements and flat geometric patterns built from squares and triangles, hatched to suggest grain and shadow \u2014 usable as modular tiling motifs, star-block diagrams, and axonometric block studies.
