English term (edited): bilateral hand gross motor coordination

First of all, your question is incomplete, the complete term should be (bilateral hand gross motor coordination) because when the source says "Bilateral hand gross and fine motor coordination", it means (hand gross motor coordination and hand fine motor coordination). There are 2 types of motor skills: gross and fine and you will find them explained in the enclosed link. so the right translation will be (تناسق الحركات الكبرى والحركات الصغرى لليدين)

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Note added at 35 mins (2020-08-23 11:20:14 GMT)
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انظري هنا أيضًا: https://ar.wikipedia.org/wiki/مهارات_حركية_كبرى

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Note added at 38 mins (2020-08-23 11:22:52 GMT)
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