In this tree ring instructional activity, learners analyze tree ring samples to determine the age of the tree. They compare them to archived samples and answer questions about the age of the tree and its growth years and abnormal growth...

You will find a viewer-friendly PowerPoint on the growth rings and other features found in a cross-section of a tree trunk, affectionately known as a "tree cookie." A few worksheets are provided for practice counting tree rings and a...

Individuals analyze tree rings to determine the health of an ecosystem. They then look at otoliths of fish, hard calcium carbonate structures located behind the brain, in the same manner. 

"Tree Cookies!" is a delicious little presentation designed to introduce upper elementary or middle school botanists to the anatomy of a tree trunk. The cambium, phloem, xylem, and other vital structures are identified and defined. Two...

Students examine trees and discuss how the environment effected the tree. They also predict what the area look like in fifty years.

Students examine tree rings to determine its age.  In this tree ring lesson, students examine core tree samples, identify the tree rings, and then determine its age. Students complete a worksheet, deciding which of the two core...

Students identify heartwood, sapwood, and a tree's annual rings, infer from a tree's rings what damage or stress might have occurred in its life, and make a time-line of human history that coincides with a tree's rings.

The life of a tree is the focus of a packet consisting of several activities all covering a different subject. Second graders measure shadows, make pinecone critters, write poems, count rings, complete a word search, play tree tag, and...

Fifth graders study environmental changes by examining the annual rings of a cross-section of a tree trunk. They access websites to complete a worksheet on the parts of a tree. They count the annual rings on a tree slice while observing...

Bring math home with this interative estimating instructional activity! Scholars make educated guesses about the number of six household items: crayons in a crayon box, keys on a key ring, coins in a piggy bank, trees in the yard,...

For this absolute time worksheet, students answer eleven questions about ways to measure the age of fossils. They define half-life, answer questions about radioactive dating, tree rings and varves.

In this sunspots and climate change learning exercise, learners use a diagram of a tree stump and its rings to determine the age of the tree. They use sunspot data from the internet and they construct an Excel spreadsheet to compare the...

Students examine how scientists determine the age of living and non-living trees. They simulate the role of a tree-ring scientist, crossdating tree-ring samples and determining which sample is the oldest and the age of the samples.

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 investigate the growth of trees. In this tree growth lesson, students discover that trees make a ring each year they live. Students use new voabulary such as bark, phloem, and cambuim to talk about tree parts. Students create a...

In this age of a tree worksheet, students use "Tree Cookies" and count the number of rings in each, they determine the age of the tree and they identify any special features and what they may indicate.

Young botanists examine the different parts of tress and then draw parallels between the functions of these parts and the function of parts of the human body. 

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

Learners discover how trees preserve a record of times in the past.

In this online interactive tree quiz learning exercise, learners respond to 6 questions. Students may check their answers for accuracy.

Students list four ways to identify trees. For this tree identification instructional activity, students use tree identification techniques such as leafs, bark, wood grain, soil type, and climate to create tables and graphs.

Students examine how to plan for prudent use of trees so that we never run out of this natural resource. They determine what the oldest wooden object in their home is and draw picture of it. They observe a cross section of a tree and...

In this measuring trees worksheet, students explore the internet program Gizmo about measuring trees and answer short answer questions about it. Students answer 22 questions.

Students work in pairs to determine the age of a tree using two different methods in this experiment. They collect data about how trees change over time.