Sixth graders investigate the various types of pollutants found in water and ways to help prevent water pollution. Through a hands-on experiment, students create samples of polluted water by mixing water with vegetable oil, dirt,...

Did you know that an acre of trees can absorb as much carbon dioxide as a car emits in 11,000 miles of driving? Such fun facts abound in a short reading comprehension passage detailing the benefits of parks and rooftop gardens. After...