As an additional source, attached it the original SEA lesson plan that includes some suggested assessment tools!

If they noted that melting icebergs don't cause the sealevel to rise, they were correct!

Many people might not know the difference between icebergs and glaciers, but now that your students have investigated them, they know that melting glaciers are contributing to sea level rise. On the other hand, the melting of Icebergs does not affect sea level.