This requires a free plug-in, Adobe Acrobat Reader. You can find out if you need it by clicking on the PDF link. Grades 6-8 Extensions Ideas are linked to the Principles and Standards for School Mathematics. They can then test the validity of the information they find by designing their own experiment. The Earthworks Group, authors of 50 Simple Things Kids Can Do to Save the Earth, claim that the average shower uses 25 gallons of water and the average bath requires 50 gallons of water.
Students can gather facts about wasting water.
Based on the information they find students can make up multiple choice questions that require the reader to make estimates based on the given information. Students can then present their questions to each other and have follow-up discussions that focus on improving their number sense and estimation skills.