Rock-a-Stack
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Rock-a-Stack is a toy by Fisher-Price with colorful rings that have to be placed in order of size onto a tapered pole mounted on a rocking base. When stacked correctly the hollow plastic rings follow ROYGBIV color progression. The Rock-a-Stack is designed to teach young children about colors and to help them develop their hand-eye coordination and shape perception. Since the introduction of Rock-A-Stacks in 1960, over 40 million have been sold. While Ernest Thornell was the Fisher-Price designer of this toy (from a phone conversation on 8-31-16 between Ernest Thornell and Eric Smith), the Rock-a-Stack is stylistically similar to the earlier Rocky Color Cone wooden stacking toy designed in 1938 by Jarvis Rockwell (brother of Norman Rockwell) for Holgate Toys.
Rock-a-Stack is a toy by Fisher-Price with colorful rings that have to be placed in order of size onto a tapered pole mounted on a rocking base. When stacked correctly the hollow plastic rings follow ROYGBIV color progression. The Rock-a-Stack is designed to teach young children about colors and to help them develop their hand-eye coordination and shape perception. Since the introduction of Rock-A-Stacks in 1960, over 40 million have been sold. While Ernest Thornell was the Fisher-Price designer of this toy (from a phone conversation on 8-31-16 between Ernest Thornell and Eric Smith), the Rock-a-Stack is stylistically similar to the earlier Rocky Color Cone wooden stacking toy designed in 1938 by Jarvis Rockwell (brother of Norman Rockwell) for Holgate Toys. ==External links== Fisher-Price website
Text derived from https://en.wikipedia.org/w/index.php?oldid=1324317537 under CC BY-SA 4.0; modifications have been made.