In Hand Manipulation Skills

Front 1

Finger-to-Palm Translation

Back 1

A linear movement of an object from the fingers to the palm of the hand e.g. picking up coins
12-15 MONTHS

Front 2

Palm-to-Finger Translation

Back 2

With stabalization, a linear movement of an object from the palm of the hand to the fingers e.g. placing coins in a slot
2-2 1/2 YEARS

Front 3

Shift

Back 3

A linear movement of an object on the finger surfaces to allow for repositionig of the object relative to the finger pads e.g. separating 2 pieces of paper
3-3 1/2 YEARS

Front 4

Simple Rotation

Back 4

The turning or rolling of an object held at the finger pads approximately 90 degrees or less, e.g. unscrewing a small bottle cap
2-2 1/2 YEARS

Front 5

Complex Rotation

Back 5

The rotation of an object 360 degrees, e.g. turning a pencil over to erase
6-7 YEARS

Front 6

In-Hand Manipulation

Back 6

With stabalization several objects are held in the hand and manipulation of one object occurs, while simultaneously stabilizing the others e.g. picking up pennies with thumb and forefinger while storing them in the ulnar side of the same hand
6-7 YEARS