Unit Plan
PBS

Pbs: Human Tree: Ratios

For Students 6th - 8th
Watch as the National Museum of Mathematics creates an interesting series of images using ratios. This video focuses on the proportional relationship observed in fractals and challenges you to do some critical thinking using ratios and...
Lesson Plan
PBS

Pbs Teachers: Methuselah Tree

For Teachers 9th - 10th
Examine how scientists determine the age of living and non-living trees and identify factors that impact sizes of tree rings. Analyze tree ring samples and determine the age of the oldest sample.
Lesson Plan
PBS

Pbs Teachers:broom Forest: A Tall Trees Simulation

For Teachers 3rd - 8th
Explore environmental factors of an area that affect a species' characteristics over time. Construct a "broom" tree, sketch support structures similar to those used by the tall Amazon trees and explain the limitations of such structures.
Article
Cornell Lab of Ornithology

Habitat Network: Snags: Nature's Apartment Complexes

For Students 9th - 10th
Find out why the sometimes hazardous or untidy dead trees are actually quite important to wildlife.
Article
Oswego City School District

Regents Prep: Ecosystems/communities

For Students 9th - 10th
Abiotic factors vary in the environment and determining the types and numbers of organisms that exist in that environment. Factors which determine the types and numbers of organisms of a species in an ecosystem are called limiting...
Interactive
Calculator Soup

Calculator Soup: Prime Factorization Calculator

For Students 9th - 10th
Use this prime numbers calculator to find all prime factors of a given integer number up to 1 trillion. This calculator presents prime factors of a number, prime decomposition in exponential form, CSV (comma separated values) list of...

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