... materials from the students’ world – trading-card holders – and uses them to make interactive, cost-effective “plant pouches” that can function as living microscope slides. Students grow plants in card holders and are able to observe both the roots and shoots for several weeks, including making observations...

...Carlie S. Wiener; Marc O. Lammers This article presents a classroom activity for grades 4 to 6 based on real research from the Hawai'i Institute of Marine Biology Northwestern Hawaiian Islands Research Partnership. Students learn how scientists use sound to observe and monitor marine environments...