Study various ways to preserve the Earth and ask students to create an informational brochure detailing these activities. Take a plain sheet of paper and fold it in thirds to create your brochure. Have the students write an appropriate title on the front flap and then include information for adults or kids about recycling and conservation. Cut out photographs from magazines to use in the brochure.
Ask students to write a letter to the local newspaper suggesting specific ways people at home can celebrate Earth Day. Ideas might include recycling common household objects or purchasing a rain barrel to conserve water. Instruct the students on the proper way to construct a letter and show them examples of letters that have been published. If one of your student's letters is published, display it in your classroom.
Compiling a list is a writing activity that helps students learn to organize their thoughts. For Earth Day, ask students to write a checklist of things they can do to conserve resources at their school. These might include cleaning up school grounds or maintaining recycle bins in the classroom.
Ask your students to write a story about the importance of conserving the Earth from a the perspective of the planet itself. Have them imagine they are the Earth and are being abused by the humans who live on it. Taking on the perspective of the Earth, ask students to describe how it feels to be polluted and trashed. Depending on the age of the children, require a story that ranges in length from a paragraph to a few pages. Allow students to present their creations to the class.