Mathigon
Mathigon: Algebra: Fibonacci Numbers
This lesson focuses on Fibonacci numbers, a pattern based on the sum of the two previous numbers. It offers examples and practice exercises using some form of Fibonacci numbers.
California Institute of Technology
Spitzer Space Telescope: Our Galaxy's 'Twin'
This image, titled "Morphology of Our Galaxy's 'Twin'" features three individual pictures of a nearby spiral galaxy that closely resembles our own. The text under the image details various specifics about the picture.
Education.com
Education.com: Different Types of Galaxies
[Free Registration/Login Required] A downloadable worksheet that looks at the features of three types of galaxies.
Science Education Resource Center at Carleton College
Serc: The Fishing Game
A lesson outline for The Fishing Game, which is located on a linked website. Teachers register a class from within the game. Students compete against two fishing companies and try to make the most profit they can over a ten-year period....
Mathigon
Mathigon: Math Foundations: Divisibility and Primes: The Distribution of Primes
This lesson focuses on the distribution of large prime numbers. It offers a calculator to check numbers for prime and a calculator that allows you to create prime numbers. It also provides the history of methods find the distribution of...
Cold Spring Harbor Laboratory
Dna Learning Center: Dna Molecule, Dna Unzip
The DNA double helix contains two sequences of nucleotide code letters than run along the molecule. Untwist the spiral and DNA can be seen as two parallel strands. That's why its sometimes called the double helix. Unzip the strands and...
TED Talks
Ted: Ted Ed: Why Tragedies Are Alluring
The story goes something like this: A royal, rich, or righteous individual makes a mistake that sends his or her life spiraling into ruin. It's the classic story arc for a Greek tragedy, and we love it so much that we continue to use it...
Ed Koday
Web Archive: Antlion
Have you ever heard of a "doodlebug"? Well, you're looking at one right up above! It is actually an insect called an antlion. The antlion gets its name because it is a voracious predator of ants and other insects. Actually, it's only the...
Other
Kidstorm: Hurricanes
Get the facts on hurricanes with this detailed information page. This page includes photos, charts and satellite images.
Curated OER
Ar Kive: Narwhal (Monodon Monoceros)
Famous for its unicorn-like single tusk, narwhals have inspired legends in many cultures and are still revered across the world. The smooth, white tusk is normally found only on males and is the result of extreme growth of the left...
Curated OER
Eternal Egypt: Painted Ceramic Urn
The painted hydria, or three-handled water jug, of Hadara was made of ceramic. The hydria is a product of the Laurel atelier, or workshop: the neck is decorated with laurel leaves, and on the shoulder a palm framed with volutes, which...
Curated OER
Eternal Egypt: Round Bodied Lamp With Monogram
The round-bodied lamp has a monogram and a cross in the center. The handle has two ridges on the top and the wick opening is round with a spiral ornament above it.
Curated OER
Educational Technology Clearinghouse: Clip Art Etc: Fax
A torch. In the annexed woodcut, the female figure is copied from a fictile vase. The winged figure on the left hand, asleep and leaning on a torch, is from a funeral monument at Rome. The other winged figure represents Cupid as Lethaus...