Minoan vase from 1400 BC (about 3,400 years ago)
Going in Ancient History & Archaeology and Art

 

What are wedding rings made of,
and how do their properties vary?
Another infographic from Compound Interest 10 ring
alloys are shown. Accompanying text is very informative
and mentions a few other metal combinations not shown.

 

The 'Nebra Sky Disk' with two bronze swords and axe heads
uncovered from Saxon-Anhalt, Germany and dated to 1600 BC.
This incredible discovery of the oldest depiction of the universe
was almost lost to the black market.
Dated to 1600 BCE, this bronze disk has a diameter of 32cm
(about the size of a vinyl LP) and weighs around 2 kg.
It is patinated blue-green and embossed with gold leaf symbols
which appear to represent a crescent moon, the sun (or perhaps
a full moon), stars, a curved gold band, interpreted as a sun boat,
and a further gold band on the edge of the disk which probably
represents one of the horizons. - source = Museum of Artifacts

 

Seasons This great Australian site is one small part of a bigger
internet education complex called Scootle.
Seasons is designed to teach middle schoolers and up about the
interactions among orbits, axis tilt, rotations, and sunlight.
Students manipulate orbits, tilt, rotations, daylight, etc. to make
seasons.

Going in Astronomy and Weather

 

 

Armor as art, elaborate inlaid craftsmanship.

 

In the tomb of Queen Pu-abi of Ur

Solid gold headdress and earrings were found on the
body of Queen Pu-abi in the Royal Cemetery at Ur, along with
bead necklaces and collar.
The beads are ivory, carnelian (red), and lapis (blue).
Dates from 2,600 BC (about), which was 4,600 years ago.

Going in Ancient History & Archaeology and Art

 

 

Declaration of Independence
from the National Archives, the entire document, in a
modern font. Students can read this version easily.

 

Sharks of Oregon: The 8 largest sharks found off Oregon’s coast
Short, fact-filled article. Good fact sheets & illustrations of the sharks.
Each shark is drawn next to a human for size comparison.
The close-up of a Great White Shark is scary. Also has records of
shark attacks.
Going in Animals

Ornamental knives from the Mycenean culture of ancient Greece. These
were found in shaft graves. These blades are of solid siver with gold
art decorations. Only one knife has a haft. The other knives have rivets
to attach hafts.
The silver blades are corroded but the gold decorations are still in great
shape. Why doesn't the gold corrode, too?

Going in Earth Science, in Ancient History & Archaeology, and Art

Solid gold earring (?) from Magna Grecia (southern Italy and Sicily)
before the Romans came.

Going in Ancient History & Archaeology and Art

 

Alice Dunbar Nelson (July 19, 1875 – September 18, 1935) was an
AfroAmerican poet, journalist, and political activist. Among the first
generation born free in the South after the Civil War, she was one
of the prominent African Americans involved in the artistic flourishing
of the Harlem Renaissance. Her first husband was the poet Paul
Laurence Dunbar. After his death, she married physician Henry A. Callis;
and, lastly, was married to Robert J. Nelson, a poet and
civil rights activist. She achieved prominence as a poet, author of
short stories and dramas, newspaper columnist, activist for
women's rights, and editor of two anthologies.

Going in Black History and Women's History

 

The Rain People visit Bear Butte

Going in Weather

 

Parentheses, Braces, and Brackets in Math
How These Symbols Help Determine the Order of Operations
from ThoughtCo.
"Three important—and related—symbols you'll see often
in math are parentheses (), brackets [], and braces {}, which
you'll encounter frequently in prealgebra and algebra. That's why
it's so important to understand the specific uses of these
symbols in higher math."
This article gives examples of how to use these symbols.
Easy to understand. ThoughtCo. has many more.

Going in Intermediate Math

 

Cape Buffalo at a waterhole; with an Oxpecker
perched on its nose getting a drink, too.

Going in Animals