Abstract: An information processing device includes, at least one processor that derives frequency characteristics of time-series data of a measurement result by an acceleration sensor and determines whether the time-series data indicates a running/walking state in accordance with whether all determination conditions including at least a first condition and a second condition are satisfied, the first condition being a condition that a frequency having maximum intensity in the derived frequency characteristics is equal to or higher than a lower limit frequency set in advance, and the second condition being a condition that at least one of the frequency having the maximum intensity or a frequency having second largest intensity in the frequency characteristics falls within a range equal to or higher than the lower limit frequency and equal to or lower than an upper limit frequency set in advance.

Abstract: A form changing toy including the following is shown. A rotating axis is provided in a cover member. A plurality of figures are provided on the rotating axis and form a predetermined form different from each other with the cover member. A handle is provided on the cover member. A power transmission mechanism transmits to the rotating axis operation power of the handle in one direction to rotate the rotating axis in one direction. Each one of the plurality of figures takes a first state covered by the cover member and then takes a second state jumping out from the cover member and then takes the first state from the second state in order according to operation of the handle in one direction.

Abstract: A form changing toy including the following is shown. A rotating axis is provided in a cover member. A plurality of figures are provided on the rotating axis and form a predetermined form different from each other with the cover member. A handle is provided on the cover member. A power transmission mechanism transmits to the rotating axis operation power of the handle in one direction to rotate the rotating axis in one direction. Each one of the plurality of figures takes a first state covered by the cover member and then takes a second state jumping out from the cover member and then takes the first state from the second state in order according to operation of the handle in one direction.