So helpful for visual learners! Helps students sort through lots of air pollutants. Essential information about air pollution condensed onto one double-sided paper (ideally copied on one 11x17 paper, can be copied onto 2 standard pages and taped together). Kids draw, color code, and label arrows connecting pollution sources to effects. In addition, they label a house diagram with indoor air pollutant sources, define/identify primary and secondary pollutants, and get more detailed information on the six criteria pollutants. Key included (I share it with my students to help them). If you purchase, please let me know if there are any improvements you think should be made. Thanks!