1. A recognition apparatus comprising: an acquiring unit configured to acquire positions of a particular part of a user in time series; a calculator configured to calculate a feature value of a motion of the particular part from the positions acquired in time series; a determination unit configured to determine a relation between the feature value and a first threshold, and determine the relation between the feature value and a second threshold that is smaller than the first threshold; a control unit configured to control, when the feature value is equal to or larger than the second threshold and smaller than the first threshold, a display process of a screen of a display unit for informing that there is possibility of a recognition method for recognizing a position or a motion of the particular part being switched.