when are childern first developmentally ready to being learning science?

Answer 1

ARRRRRGGGGG.

Science is doing, exploring, tinkering, comparing what is to what was thought.

I would start at about 2, with the first set of building blocks.

What is learned are process skills, that in essence is the heart of science thinking.

Yes, I suspect your Science Ed teacher has some other ideas.

Answer 2

because at such a young age children tend to learn kinesthetically, hands on. Science has an abundance of hands on learning oppurtunities

Answer 3

Kindergarten