4 months to 2 years encompasses a lot of vast developmental differences...
In my state, infants are only up to 12 months
Toddlers 12 months to 24 months
Preschool 2yrs and up....
We are required to have written lesson plans for all those age groups but like I said, they are all different age groups here so the lesson plans are really reflective of their ages.
What I would put under large motor skills for example on one lesson plan, I couldn't see meeting the same need on a different age group lesson plan.
Sorry that isn't much help in regards to what you are asking but maybe there are others here who also have age groups that cover a wider age range than I do.
Here is an example of
infant lesson plans covering a whole year that may be helpful.
