Ababy's ability to manipulate objects greatly expands with the development of use of the thumb and index finger to pick up objects.

Fine motor skills

Explanation:

While gross motor skills involve the bigger muscles, fine motor skills work the smaller muscles of the hands, fingers, and wrists.

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Your child needs fine motor skills to do finicky things such as:

holding a pencil or scissors.

writing.

cutting.

threading beads.

playing with Legos.

buttoning up their coat.

d.) continue to rise rapidly

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