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  2. Pattern Blocks - Wikipedia

    en.wikipedia.org/wiki/Pattern_blocks

    The first Trial Edition of the Teacher's Guide states: "Work on Pattern Blocks was begun by Edward Prenowitz in 1963. He developed most of the ideas for the blocks and their uses and arranged for the first classroom trials. Many ESS staff members tried the materials and suggested additional activities."

  3. Klotski - Wikipedia

    en.wikipedia.org/wiki/Klotski

    In a Klotski puzzle, the largest block must be moved to the bottom middle location so that it can be slid over the border, without any of the other blocks being removed in this way. Klotski (from Polish: klocki, lit. 'wooden blocks') is a sliding block puzzle thought to have originated in the early 20th century. The name may refer to a specific ...

  4. Jacob's ladder (toy) - Wikipedia

    en.wikipedia.org/wiki/Jacob's_ladder_(toy)

    A Jacob's ladder (also magic tablets, Chinese blocks, and klick-klack toy [1]) is a folk toy consisting of blocks of wood held together by strings or ribbons. When the ladder is held at one end, blocks appear to cascade down the strings. This effect is a visual illusion which is the result of one

  5. Burr puzzle - Wikipedia

    en.wikipedia.org/wiki/Burr_puzzle

    Burr puzzles. A burr puzzle is an interlocking puzzle consisting of notched sticks, combined to make one three-dimensional, usually symmetrical unit. These puzzles are traditionally made of wood, but versions made of plastic or metal can also be found. Quality burr puzzles are usually precision-made for easy sliding and accurate fitting of the ...

  6. Sifo Company - Wikipedia

    en.wikipedia.org/wiki/Sifo_Company

    The Sifo Company (which did business as Sifo's Toys and The Sifo Novelty Company) was a maker of mainly wooden children's toys that was located in St. Paul, MN. Sifo's niche was early educational toys. Sifo catalogs of the period emphasized the various properties of their toys that would entertain and educate children.

  7. Toy block - Wikipedia

    en.wikipedia.org/wiki/Toy_block

    KEVA Planks is a wooden block construction toy. Froebel gifts are a range of educational materials first used in the original Kindergarten. Montessori sensorial materials are a range of educational materials including wooden blocks. Pattern blocks and Cuisenaire rods are sets of small blocks used in mathematics education and also in block play.