Amazon.com: Adena Montessori Full Size Object Permanence Box with Tray Three Balls Montessori Toys for 6-12 Month Infant 1 Year Old Babies Toddlers : Toys & Games
Babies point at objects because they really want to touch them | New Scientist
When Should Babies Grab Toys and Objects? Age & How to Help
Babies Are Drawn to Objects That Defy Expectation - Scientific American
Object Permanence: Learn How to Help Your Baby Develop This Important – The Topponcino Company
Babies & Transitional Objects: Why Do Some Babies Have a Comfort Object?
What is Object Permanence – Happiest Baby
Milestones in Infant Vision Development
Your 6-month-old's cognitive development | Lovevery