I went on a field trip yesterday with the sixth graders at my school. We went to Salto Grande, the dam shared by Argentina and Uruguay on the Rio Uruguay.
Next week I am going to give a presentation on the Hoover Dam in the United States so the students can work on using English comparatives and superlatives to describe the differences between the two dams. Hopefully they will be able to say things like: The Hoover Dam is bigger. The Salto Grande is prettier. The Hoover Dam is the largest. Salto Grande is the newest (or whatever adjective + er or + est).
I was probably just about as excited as the 6th graders to go on a field trip. Dams are impressive displays of human engineering to be able to harness the power of nature.