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Grant Wood Area Education Agency

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Trees

Investigation 3: Trees Through the Seasons
Part 5: Winter Twigs

Lesson Summary

Students observe the inside of tree twigs, observing growth rings, buds, and leaf scars.

Teacher Background

Twigs have structures such as leaf scars and buds.
Growth rings in twigs and trunks show how much a tree has grown in a year.

Set-up/Management Tips

Check with a nursery or your grounds manager to see if any trees are being pruned.

Literacy Support

Scientific Vocabulary
The following words are key vocabulary words that will be introduced in this lesson and reinforced throughout the unit:

Bark
Branch
Bud
Growth Ring
Leaf scar
Trunk