Wheat Seeds?

Does anyone have a good online source for small amounts of wheat seeds?  I have a very small plot of land (very small - 4'X4') and a I realize I won't get much of a yeild, but I want my kids to see how bread gets to the table from beginning to end.

I've found a few places that sell 3, 6, 9 pound bags online, but I need much less.  And, since I procrastionated, I suppose I'll need to grow spring wheat instead of winter.

Thanks!