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. 

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.  For 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...

Young scholars 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...

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.

Learners 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.  Learners complete a chart identifying...

Students investigate the growth of trees. For 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...

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. 

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

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

Pupils list four ways to identify trees. In 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...

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.

Students examine a cross section of a tree. They discuss what the rings mean and how they can tell its age. They complete a worksheet to end the lesson.

Students examine tree rings and then research an event for each growth ring. In this history lesson students design a timeline and research topics using books and the Internet.

Students discover how to estimate the age of redwood trees. They measure the trees' diameters by using string to calculate the circumferences. Students conclude by discussing the science of dendrochronolgy.

Young scholars investigate tree stems and conduct an experiment on how non living factors affect living factors. In this tree stems lesson plan, students observe and record physical characteristics, and make predictions on what factors...

Students examine how the circumference, diameter, and the relationship of Pi of a circle are related. They count the summer rings of a tree to determine its growth.

For this passive voice verb worksheet, they rewrite 5 sentence using a passive verbs, rewrite 4 sentences to maintain meaning, change 10 sentences to the passive form, and change 10 passive sentences into the active form.