Preschool children who are learning to cut with a child-safe knife are most likely using their tripod grasp.
A tripod hold consists of the thumb, index and middle finger and is used when manipulating an object. This hand position is used to pick up small objects, although it is most frequently used to describe the pencil grip. The ring finger and pinky finger should be curled into the palm to give additional stability in this posture.
A child's grip changes from a static tripod grip, where the hand moves as a single unit, to a dynamic tripod grip, where small finger movements more precisely control the object, around the age of four to five. The preferred hand is primarily used.
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