What can be done to improve the concentration of 3.5 years old.

A. hi no need to do extra things. you can do this in play. I mean , spend quality time with your child and play different games with your child. for example- 1.you can write different letters on page or board ,then ask your child to find particular letter from it . 2.you can also play shape sorting or color sorting activity for this which needs hand and eye coordination . 3.you can practice 2 or 3 minutes mediation then gradually increase the timing. avoid giving extreme salty and sugary food. keep your child well hydrated.