Learners fill jars with dried beans and water, cover the jars, and wait to see what happens in this excellent Science experiment ideal for Earth Day (April 22nd). Emphasis is placed on discovering the reactions of seeds to water.

Students examine what factors influence climate.  In this investigative lesson students compare the factors that influence climate and how they effect tree growth.

Students examine the pH level of rain water in their local community. They locate each location on a map. They analyze the data and draw conclusions.

Students describe the importance of having a balance ecosystem. After a brief lecture, students give an explanation of the properties of an ecosystem. They create a web, using yarn which shows how the various members of the ecosystem are...

Students read an online article to explore rainforests of the world starting with the Barro Colorado reserve in the Panama Canal. They participate in a mock international summit about rainforest conservation issues.

Students measure the pH of local rain water. Students map the location of the collected rain water according to pH levels.

In a lesson in this issue of Smithsonian in Your Classroom, students do the work of a team of paleontologists studying a time of rising carbon dioxide and rapid global warming during the Eocene epoch. By examining fossils of tree leaves,...

In this activity, students explore how, in New England, the timing of color change and leaf drop of deciduous trees is changing.