How Fast Does This Tree Grow?

What are the differences between coniferous and deciduous trees? Supplement your tree lessons with a set of activities that has learners describing, naming, comparing, and reading about deciduous and coniferous trees. The activities are...

You'll find everything but the kitchen sink here ... or just a carbon sink. In the activity, pairs or groups of middle school learners go outside and measure a tree's circumference and height to estimate its carbon storage potential and...

Planning a unit on simple machines? Save some time and energy with this collection of lessons and activities that explores how these devices are used in the real world to make life a little easier. 

How are simple machines used in professional settings? To find out, scholars examine various pictures, cross-reference a list of simple machines, and write or verbally share how those items are used in specific jobs.

From stately oaks to towering pines, trees are the largest members of the plant kingdom that most people see. But how do trees get so big? Find out where the mass of a tree comes from with a short video. The narrator presents the topic...

From seed to fruit. Take a look at how apple farmers grow apple trees and manage their orchards. 

The question isn't whether trees can communicate with each other, but how their communication works. Learn about the intricate communication network between trees and the fungus in the soil, and how the relationship goes beyond a...

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...

Seventh graders identify and examine a deciduous and coniferous tree. Using the descriptions, they discover the types of tress in their local area. As a class, they practice identifying trees on a walk in a park collecting leaves. They...

Sixth graders participate in an online, cooperative project researching trees in their local environments for use in an online knowledge game. They take digital pictures of the trees, bark, and leaves. After completing their research,...