How can I develop a less-than-a -year-old baby's intelligence? What are the activities, specifically?

I have asked the same thing to my pedia last week. She advised me that I keep her away from gadgets until the age of 2. If I'm watching TV, she should be asleep. She also said to read her books, even though she's only two months old. And, talk to her frequently.

Expose her to different things. You can read to her, talk to her a lot, walk her out. Any activity that would stimulate her senses. I discourage that you use gadgets on her, probably just to play music-- not to make her watch videos.