Play the game "Come - Go away"!

Are your baby crying when you leave the room or a toy falls down and disappers? - It means, the little one doesn't understand that they just move! 
Show your kid that things can "hide" and then come back again! Arrange the following funny game: show your baby a toy and then cover it up. Be ready to your little one's crying as he may think the toy has disappeared. Then show where the toy is hidden. Repeat it several times, accompanying your actions with joyful comments "Where's the toy hidden?","Oh, that's it!"
You'll see your baby smiling when he understand that the toy is still here!
Make a photo of your little one playing the game and upload to the App. Write some words about your baby's reaction.