Leaves fall off the tree in the autumn, but why do they change colors? The interactive covers the role of chlorophyll and photosynthesis. It also explains both carotenoids and anthocyanins.

Students take samples of local trees and identify the tree using a field guide. They keep data for the tree on the Tree ID sheet. They create leaf, seed, bark, and flower prints and paint them.

Students examine how the environment influences tree growth. In this tree lesson plan, students analyze the growth of rings to see how plants adjust to adverse conditions in order to survive.

Students investigate the age of trees by analyzing tree rings.  In this dendocronology lesson, students examine sample images of tree rings and identify their age by the amount of rings.  Students complete a chart identifying...

Students use a Palm loaded with botany software to assist them in deciding if items are produced from trees. They identify local deciduous and coniferous trees.

Students examine the animals that live in trees. They identify their sounds, footprints and droppings. They draw pictures of the animals as well.

Fifth graders diagram and label the parts of a tree. For this lesson plan on how trees obtain food, 5th graders diagram and label the parts of a tree, and determine the diameter, height, and age of a tree.

Students explore how to transplant trees in their community. In this citizenship lesson plan, students construct a map of where to plant trees and then plant the trees.

Third graders make a poster display of objects made from trees. In this wood products instructional activity, 3rd graders read "The Giving Tree," discuss things that are produced from trees and watch the videos "Let's Make a Pencil," and...

Third graders adopt a deciduous tree in September, and begin regular observations of their tree. They create a timeline to show how leaves change color and conduct a science experiment to illustrate color change.

Students explore the four seasons. For this seasons lesson, students create a class tree. Students make leaves for the tree for each of the seasons. Students mark their paper into fourths and draw a picture of the seasons.

Students investigate how a tree grows from a seed. In this plant biology lesson plan, students use potting soil, tree seeds, and a paper cup to observe seeds growing into plants. Students record observations in their science journals.

Students work as a class-size unit as well as in small groups to become proficient in observing tree characteristics to facilitate species identification. They identify most common tree species by observing leaf, flower, fruit and bark...

Learners discuss various types of trees. In this forest structure lesson, students cut out pictures of a wide variety of trees and paste the pictures onto index cards. Learners identify each tree and present information about each forest...

Students examine trees. In this tree activity, students create a model of a tree and its parts.

Second graders determine the ways in which deciduous trees lose their leaves by investigating fallen leaves and how the weather changes throughout the seasons. They obtain knowledge about why and what causes the weather to change...

Students study trees and their growth.  In this investigative lesson students work in groups to reconstruct a 50 year climatic history using a simulated tree ring. 

Students investigate adaptation.  In this cookie age lesson, students examine changes and variations in chocolate chips in cookies in preparation for determining the age of trees using lines.  Students discuss how the age of...

In this absolute time worksheet, students define radiometric dating, tree rings and varves as means to measure absolute time. They are given information about each of these methods of dating.

Students discuss importance of American Chestnut tree, explore its value and uses, examine how it has almost become extinct, and identify ways certain groups are working to help regain American Chestnut tree population through breeding.

Students read "The Great Kapok Tree" by Lynne Cherry while listening to Tropical Rainforest music. They name all the speaking animals in the book and list each of the reasons the animals gave for not cutting down the tree. They then...

Young scholars study fungus which attacks apple trees. In this apple tree lesson, students grow a mold to demonstrate how an apple fungus could destroy an apple tree. They observe the mold which will not actually destroy a tree. They...

Fourth graders observe, plan, research, and create a field guide for the trees that are in their schoolyard. For this trees lesson plan, 4th graders make careful observations of what they see around their school and create a guide.

Students examine bark beetle galleries, discuss interdependence between insects, trees, and people, and research to determine causes of other tree damage.