US Environmental Protection Agency
Tree Rings: Living Records of Climate
Open with a discussion on weather and climate and then explain how tree rings can provide scientists with information about the earth's past climate. Pupils analyze graphics of simulated tree rings from various US locations for the...
Chicago Botanic Garden
What Can Tree Rings Tell Us About Climate?
Tree rings are slightly thicker on the south side of the tree because it receives more sunlight. Part two in a series of five lessons helps learners analyze tree rings to determine the environmental conditions that caused size...
Curated OER
Signs of Change: Tree Rings
Students identify and experiment with dendrochronology (the study of tree rings to answer ecological questions about the recent past) and come up with conclusions as to what possible climatic conditions might affect tree growth in their...
Curated OER
Tree-Ring Activity
In this tree ring worksheet, 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 years.
Curated OER
Tree Rings
Fourth graders explore tree rings. In this plant biology lesson, 4th graders construct a KWL chart on tree rings and examine real tree rings. Students identify the changes that happened during the tree's life and its actual age. Students...
Purdue University
Tree Talk
Examining tree rings shows more than just age. The third installment of a five-part Family Nature Program unit has learners examine all parts of trees including tree rings to tell stories about the life of the tree. They then use their...
Polar Trec
Rings of Life
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.
Curated OER
Death and Recovery
Mount St. Helens erupted on May 18, 1980, devastating plant and animal life for miles around. Two activities are included in this lesson plan. In one, learners evaluate tree rings to determine the age of a tree and the year of a volcano....
National Wildlife Federation
Branching Out – Exploring Dendrochronology
Tree rings from North America give a continuous history of El Nino intensity over the last 1,100 years. Scholars learn how scientists use tree rings to create timelines demonstrating variations in weather patterns. The cumulative...
Curated OER
Tree Cookies
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...
National Wildlife Federation
What is DBH?
When measuring the circumference of a tree, does it matter how high you place the measuring tape? Most scholars have never considered this question, but scientists know that measurement techniques must be standardized. The 13th...
Curated OER
Dating a Volcanic Eruption
Students discover the various ways in which tree rings can give information. After a brief disucssion of concentric tree rings, they use cross section cut outs of tree rings to identify the time and type of various naturally occuring...
Curated OER
Tree Rings
In this early science tree rings instructional activity, students examine 3 sets of tree rings and reveal which one is the oldest based on the number of rings.
Curated OER
Lord of the Rings - A Study of Tree Rings
Students examine trees and discuss how the environment effected the tree. They also predict what the area look like in fifty years.
Curated OER
Aging of Trees
Students examine tree rings to determine its age. In this tree ring lesson plan, students examine core tree samples, identify the tree rings, and then determine its age. Students complete a worksheet, deciding which of the two core...
Curated OER
Reading Trees: Understanding Dendrochronology
Pupils examine tree-ring dating and discuss the lack of water the settlers in Jamestown faced. They create paper tree rings, simulate rain patterns, and describe the history of construction paper tree sequences.
Curated OER
Life Cycle of Trees
Turn your students into young tree-tectives with this fun science investigation into the life of trees. To begin, a class volunteer gets dressed up in a tree costume as the different parts of trees are introduced. Then, the class learns...
Curated OER
Tree Cookies
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.
It's About Time
Paleoclimates
How do scientists know what the Earth was like in the past? This second installment of a six-part series focuses on paleoclimates and provides an overview of how geologists determine information about past climates using fossil pollen,...
National Park Service
It Was a Very Good Year
Waterton-Glacier International Peace Park includes whitebark pines that are over 1,200 years old, meaning they have been there since before medieval times. The second lesson of five details how to read tree rings for climate change and...
Chicago Botanic Garden
Historical Climate Cycles
Ice core samples give scientists access to climates of old—those from more than 800,000 years ago. Through an analysis of various temperature graphs from ice cores, tree rings, and weather stations, scholars compare historical climates...
Minnesota Department of Natural Resoures
Tree Life
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...
Curated OER
Tree-Ring Dating
In this tree-ring dating worksheet, students use activity sheets to determine a tree's age and to observe changes in climate from the tree-rings. Students investigate how archaeologists use tree rings to date evidence and they answer 5...
Curated OER
Tree Cookies!
"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...
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