1. The teacher will show the students a dandelion, medical gloves, a bounce-ball, and a rubber band. Then ask the class "Which one of these items do you believe contains "latex?" Wait for students to respond. (all contain latex)
2. Does anyone know where latex comes from? Wait for students to respond. (rubber trees, the white liquid in dandelion plants contain latex)
3. Then, ask "Which items are natural?" Wait for students to respond. (comes from nature) dandelion
"Which are synthetic?" (Wait for students to respond)
(something that is artificial or made through chemical reactions and/or compounds)
4. Place students in pairs, give each a copy of the article Natural v. Commercial Rubber: What's the Difference?" and a copy of the Venn Diagram for each student. Students will read the article and record the information.
Article: Natural v. Commercial Rubber: What's the Difference?"
5. Next, have the students to brainstorm a list of items that they think are made from rubber and record their suggestions on the board. Then ask the class which items they believe are harmful to society and place and H by their responses. Place an N by those they believe are not harmful.
6. Explain to the class that some synthetic materials could be harmful to society because of the chemical compounds that are used during their transition process. One such item is the "crumb" material that is used in soccer and football fields.
If time allows, poll the class to see how many students play on artificial turf. Student input.
7. Explain the importance of analyzing digital resources carefully in order to prove the validity of their content.
8. Pass out the analyzing a web page "Test Before You Trust" form prior to playing the video. As the video plays, students will check the appropriate box and respond to each question. Allow time for students to work with a partner at the end of the video to make corrections and discuss each question.
If this is the first time students have completed this type of activity, then it may be helpful to point out some of the items on the list. In addition, select more on the video link in order to see the date, author, and other important information.
Test Before You Trust
How Safe is Artificial Turf?
9. Allow time for students to share their answers on the "Test Before you Trust" sheet and ask questions about synthetic materials.
10. Revisit the board with the harmful and nonharmful student responses in order to see if the students would like to make any changes.