A platform (4) arranged on bearing element (2) mounted on base (1) and periodically rotated in clockwise and anti clockwise manner, is provided with a supporting surface for snow board. An oscillating crank gear is arranged for synchronizing and reversing bearing element displacements and for rotating platform. A slide moves along a crank fixed to base in one direction and ensures motion of platform with respect to base. Independent claims are also included for the following: (1) methods for teaching slalom; and (2) devices for exercising and developing skills for slalom skiing.
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