"WardsSci000892"

The classic key to identifying trees by their leaves and needles.

Provide every student in your class with their own slice of time. Each cross section measures 3 1/2” to 4 1/2” in diameter and features clearly delineated rings.

Teach Students to Quickly Determine Tree Heights

Dehydrated Preserved

Used to Examine Wood Quality and Measure Growth Rates

Determine the Diameter of Trunks by Measuring their Circumference

Explore dendrochronology.

An impressive survey of north american trees.