In this crossword puzzle worksheet, students read the 25 clues about Earth Day. Students then complete the crossword puzzle about Earth Day.

In this American West worksheet, students read about the Homestead Act of 1682. Students read 8 paragraphs and complete the 3 activities for the worksheet.

In this prepositions of position worksheet, students complete each sentence by using "in," "at," or "on." Students can get help by clicking on "show a letter."

Students examine how solar energy is absorbed and used.  In this solar energy lesson students complete several activities that allow them to better understand solar energy. 

In this ESL past simple worksheet, students complete 3 exercises in which they fill in blanks with the correct past simple form of given verbs.

Sttudents examine populations of living things and identify variations in physical features.

Site offers lessons and activities designed to supplement study of the environment and ecology. Concise explanations are presented on the importance of trees in our world. Also, problem solving and creative thinking is encouraged...

Find out the ecological benefits of filling a backyard habitat with trees.

Imagine a world without trees. Students can click on a barren field to see the transformation of the bare dirt by plants and trees. The authors include an online reference guide that lists the benefits of trees and an excellent...

Canvas the neighborhood or school grounds to identify the quantity and types of trees found. Students will map out the area including all of the trees locations. Reviewing the map, students will determine whether areas may benefit from...

Provides information about benefits of having trees in one's yard or on a farm, how to choose one, where to put it, how to plant it properly and safely, and how to care for it. (Published: October 9, 2009)

Print and complete the activities and experiments in this 22-page handout to learn more about how a tree lives, seeds and planting them, types of trees, and trees and wildlife.

The goal of this plant biology science fair project is to make and test an herbicide made from the leaves of the black walnut tree and investigate the toxicity of black walnut trees.

Valentin Hammoudi investigates why Californian Sequoia trees have limited heights.

"More Trees" is a one page, fictional, reading passage about a student and his mother getting trees from the city and planting them in their neighborhood. It is followed by constructed-response questions which require students to provide...

"More Trees" is a one page, fictional, reading passage about a student and his mother getting trees from the city and planting them in their neighborhood. It is followed by constructed-response questions which require students to provide...

Students go outside to look for trees and gather leaves. Working cooperatively they will sort and try to classify the trees by the characteristics of their leaves.

A virtual who's who of invasive plants, herbs, vines, shrubs, and trees. This comprehensive site provides easy-to-read fact sheets that contain native ranges, plant descriptions, ecological threats, U.S. distributions & habitats,...

A clipart illustration by Phillip Martin titled "Planting Trees."

This article instructs you on the basics of planting a tree. Topics include: choosing the right tree, preparing the site for planting, planting the tree and after care.

A Scottish conservation charity dedicated to the regeneration and restoration of the Caledonian Forest in the Highlands of Scotland.

Good list of examples of how dormancy in tree seeds can be overcome. In the discussion, you'll pick up a fair amount about dormancy in plants.

Find out why native fruit-producing trees and shrubs are essential components of diverse habitats.

Find out why native fruit-producing trees and shrubs are essential components of diverse habitats.