Using a large plastic storage box with a brick in the centre does a good job. A current is created by sweeping the hand through the water. Shade cloth, old wire screens Shredded plastic, paper and leaves to test trap Plastic container for water brick in the centre Plastic self adhesive hooks, etc to hold trap in the container Students will need to identify and acquire the materials they need to make their trap. They will need to take careful note of how it will be fixed into the model creek, drain, etc. Having tested the trap, they should evaluate how it performed.
Students are usually very keen to make modifications to improve their design.
Find out from students what constitutes a good design and get them to share how they overcame problems. I hate rubbish on the beach and the pollution where I swim. St Kilda EarthCare St Kilda EarthCare has made a detailed list of the litter they have picked up along the marine breakwater over three years. Examine the table and ask students to report on the types of litter and any marked changes. This page has been visited times since 4 January 1999.