A map from 1898 of Mexico, Central America and the West Indies. The map includes an inset map of Cuba and the Isthmus of Nicaragua. "The surface of the Rocky Mountain highland in Mexico is quite similar to that of the great plateau...

A map showing Vegetation in Europe as of 1898. "The great agricultural regions are (1) the northern lowland from the Atlantic eastward through southern Russia, and (2) the broad fertile valleys of the Danube, the Po, the Rhone, and the...

The Hull-Rust-Mahoning Mine in Hibbing, Minnesota, is the largest open pit iron mine in the world. The mine, located in the Mesabi Range, supplied as much as one-fourth of all the iron ore mined in the United States during its peak...

A guide to support parents as they work with their students in identifying, composing, and partitioning shapes.

[Free Registration/Login Required] Students will use this flip chart to measure to the nearest eighth of an inch. The ruler has been enlarged to focus on the half, fourth, eighth, and sixteenth increments.

This site from Teoria's Books offers a short, easy to read article on Key Signatures. An interactive keyboard makes the learning more fun.

Mary I (18 February 1516 - 17 November 1558), was Queen of England and Queen of Ireland from 19 July 1553 until her death. The fourth crowned monarch of the Tudor dynasty, she is remembered for restoring England to Roman Catholicism...

Mary I (18 February 1516 - 17 November 1558), was Queen of England and Queen of Ireland from 19 July 1553 until her death. The fourth crowned monarch of the Tudor dynasty, she is remembered for restoring England to Roman Catholicism...

Mary I (18 February 1516 - 17 November 1558), was Queen of England and Queen of Ireland from 19 July 1553 until her death. The fourth crowned monarch of the Tudor dynasty, she is remembered for restoring England to Roman Catholicism...

Rahotep might have been a son of King Senefru, the founder of the fourth dynasty and thus, a half brother of King Khufu, the builder of the great pyramid in Giza Necropolis. Rahotep's wife, Nefret, whose name means "the beautiful", was a...

This female portrait is stylistically very close to the Byzantine iconographic tradition, although the lack of characterizing detail means it might be dated anywhere between the second half of the second century AD and the start of the...

Mary, the fourth and penultimate monarch of the Tudor dynasty, is remembered for returning England from Protestantism to Roman Catholicism. To this end, she had almost three hundred religious dissenters executed; as a consequence, she is...

Practice adding and subtracting mixed numbers with common (like) denominators. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.