Hi,&nbsp;Hyunsun Suh:<br /><br /><br />I have uploaded your edited document, and I hope that you find the suggestions helpful. If you have any questions, please send a message to me via Editor World.<br /><br />Thank you for providing such clear instructions, which made my job so much easier. I just had to polish here and there, a little fussing and fixing. Happily, my wife, now retired, was a teacher of young children, so she could help with the general philosophy&nbsp;of your topic. As recently as two years ago, she was taking young children on many nature walks - and didn't lose a single one! (I'm so absent-minded, I would have lost them all.)<br /><br />Anyway, you did a great job! I wish I was as fluent in your native language as you are in English.<br /><br />Although I was careful not to change the content, please proofread the edited document carefully.<br /><br />Best wishes - George (TypeRighter)<br />I am usually available for editing between 6:00 am and 10:30 pm (EST). If my status is set to 'unavailable', you can still reach me via Editor World.