Teach knight pattern to 4-year old!?

I've been teaching my daughters (4 and 7) to play chess since May. The 7-year old has already mastered the basics and we enjoy playing every day (mostly end game problems where she starts with an advantage).

However, the 4-year old really wants to play and we are making progress but knights are especially difficult for her. Any suggestions or tricks? She doesn't speak much English yet either so it can't be English-centric.

Any links or suggestions appreciated. I searched the site and found this already: http://www.chess.com/forum/view/general/how-and-when-to-teach-a-child-chess

Or is 4 too early for chess for some kids?

One idea: At that age, the Knight pattern could be taught/practiced with their feet?

Find a checkerboard floor pattern someplace ( office buildings, malls, who-knows-where-else) and try playing a hop-scotch like game where they have to hop like a knight from one square to the other. You could put a toy/object or even some reward token on those move squares and ask them to pick it up each time they hop to that square?

The basic premise is rather than make it a visual abstraction exercise for their brain (which is hard), make it about physical motion and navigation which is instinctive and hardwired into our genes from the cave-man era.  Might help them see the pattern so much easier when they transition to the board.

@Shivsky: Thanks! Very good idea and I saw an almost immediate improvement.

Good to know. As a child, I remember long waits with my parents in line so I would be delighted if I saw this floor pattern and would literally do a hopping knight tour to keep the boredom away ... hence the idea :)

A while ago, I got a book on teaching chess to kids. It had a rather different approach to teaching the knight move: instead of talking about L-shapes, it talked about a "fence" covering the eight squares around the knight. The knight hops over the fence and lands on a square of the opposite color from its starting square. Apparently kids grasp that explanation much more easily than the traditional, L-shape explanation.

The book is called "Chess is child's play", by Laura Sherman and Bill Kilpatrick.

I've been describing the knights movement to my four year old daughter as "2 and then 1 to the side." Just this evening she seemed to be starting to get the hang of it. I put my queen at one end of the board, where it hollered over to her knights at the other end that they should come visit (the knights were feeling more social than aggressive). She actually got both knights to their destination in the minimum moves without any guidance.

As for whether 4 is too young, I'm sure that it isn't if you take the right approach. I just really have to watch that my goals of "I want her to learn concept x" doesn't clobber the goal of having fun and keeping her interested. For example, she'd prefer to spend most of the time making up her own games with the pieces. We've reached a compromise where she'll play a short game of my choosing, like "checkmate my king with your two rooks" and then I'll play a game of her design, often focused on social interactions between the pieces, as long as she doesn't try to change how the pieces can move. That latter part has been a difficult challenge to work out with her, but I think we're there now.

There is a iPhone/Android/web video game called Troyis based on the knight move that might help.