Karen,
I now that has been a while, but i managed to define some blocks to use with roblox. Right now i can do simple things like add parts, change baseplate color and transparency, and set the time of the day. Once one assemble the code, i managed to make a button to download the script, so the child could paste it on roblox and run it, right now i´m working on some new blocks and a better way to integrate with roblox than just pasting the code on it.
Just letting you know, it might be a functional tool for teaching programing for kids with Lua and roblox in a few weeks...