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From the river valleys of interior British Columbia south to the hills of northern Oregon and east to the continental divide in western Montana, hundreds of cliffs and boulders display carved and painted designs created by ancient artists who...
These videos serve as introduction to a vitally important subject in today's data-driven society. They explore the principles and methods that underlie the study of statistics, including such terms as mean, median, percentile, quartile,...
Basic Math teaches arithmetic and prepares students for Algebra I and beyond. The lessons cover the arithmetic of whole numbers, fractions, decimals, percents, integers, exponents, square roots, and order of operations. Lessons on geometry,...
Explores the five momentous centuries that link the Classical and Modern worlds and shows how the fall of the Roman Empire gave rise to three great civilizations: Medieval Europe, the Byzantine Empire, and the Islamic Caliphate. Examines many...