No disrespect? Then I guess you calling my comment ignorant (meaning> lacking in knowledge or training; unlearned) and my post snobby (and a snob > meaning: one who blatantly imitates, fawningly admires, or vulgarly seeks association with those regarded as social superiors) is not personal or attack driven. Not at all! I did read your excellent thoughtful thread and I certainly plead guilty to the crime (& also going a bit nuts with the quotes) of not helping the OP, nor guiding. Nor did you also. I did not read one helpful hint from you to the OP. So you are either going to add value to this thread for the OP or not, since I certainly have did not. But it appears you also failed. Now you can certain continue to not disrespect me. If you feel it helps you or others. I am here for you. Best of luck teaching kids, I just hope it is not just spoon feeding them. Absolutely no disrespect ... Cheers CopolyX From parts unknown....but I can be easily found!