Originally, I wasn't going to duplicate my comments on the other thread, but this is a new twist...
Legos vs handwriting: a few notable differences.
1. Legos are the same basic motions each time. Quite a number of different fine-motor manipulations need to be learned and sequenced for handwriting.
2. Legos are meaningful and contextual (you are building intermediate structures that have direct correspondence to your end-goal, with immediate feedback on the effectiveness/accuracy of your fine-motor motion). Handwriting is symbolic and arbitrary. There is negligible logic behind the connection between the visual/fine-motor form of letters and sounds. Therefore,
3. You don't have to memorize the placement of Legos (given the limited pool of motions, which are employed based on the solution to visual-spatial problems). You do have to memorize letter formation, the alphabetic principle, and quite a bit of English spelling, and apply them based on the solutions to language problems.
