How would you go about it? The day our oldest graduated kindergarten I started work on her summer school project, which is learning Latin. It was an abrupt and impromptu beginning, but if we are to do it every day you just have to start. So I decided to start simple. We have mastered the signum crucis, and are beginning work on the Pater Noster. I figured we would begin by getting all of their daily prayers memorized in Latin. For me this helps a ton with pronunciation.

After that I am not sure where to go. We also have a 2 and 5 year old. She can't read well enough to do Lingua Latin, though I can, and perhaps relay the information.

My main question is whether I should do colors, numbers, and the alphabet before moving on to anything else? I will look for the kid's Latin mouse program on the internet and probably use that.

Another concern is what about the two year old? Am I going to mess him up if I work on his Latin and am not able yet to speak Latin?

With the two and five year old, just speak a little Latin to them each day. The Latin words equivalent to Hi, Bye, address their names in Latin, and then after a while start pointing to things and say "Look! Ecce! Hic/haec/hoc est (---)! Point to whatever it is and say what it is in Latin. I wouldn't go beyond that. I think that would be fun for you both. Have them repeat what it is after you have said it many times...ask them "Quid est?" I would not require the 2 and 5 year old to start using the hic/haec/hoc yet, but that is just me. They can at least give the Latin word for whatever you are pointing to. child: "Mensa!" etc.

This is just my opinion. I did this with my nephews who were about that age. They could not do more than that.

You could teach them numbers 1-10 with the 2 year old, and 1-20 with the five year old. But that will take time.

The more you get into it and make it fun for them, the easier they will learn and remain focused.

Check out Minimus.

I found it. It does look pretty good.

Just in the very limited time we have put in so far I can see that this is what I was missing the times I tried to learn Latin on my own.

I suggest TPRS- Total Physical Response Storytelling

And yes, use hoc/haec/his and ille/illa/illud. It is the equivalent of this or that.

You might consider some children's books such as

Winnie ille Pu ab A. A. Milnei

Regulus vel Pueri Soli Sapiunt ab Antoine de Saint Exupéry

Cattus Petasatus a Doctore Seuss

Alicia in Terra Mirabili a Ludovici Carroll

These are EXTREMELY difficult texts. Winnie ille Pu is hard than Augustine

Yeah, they are not Latin children's books by any stretch of the imagination.