You can also have them give presentations to their peers, later in the course. They can go one-on-one with peers, as they just did with you, or you can have them go in front of a small panel of their peers, in an organized group process.
BLS data show that landscaping laborers earned an average annual wage of $25,650 as of May 2011. Workers in the top 10 percent in terms of annual income earned more than $37,580 a year, while those in the bottom 10 percent earned less than $17,130.
A surveyor alone might cost approximately $1,500 to $2,500, and when you factor in all of the other charges, the cost of merely subdividing a backyard could easily be $25,000 to $50,000 or more. Have your surveyor speak with local officials to determine what is allowed and what they require.