Place value in an extremely important concept that is taught as early as in kindergarten and as students learn about larger numbers, the concept of place value continues throughout the middle grades. Place value refers to the value of the digit based on its position. Place value is a concept that is difficult for young learners. Understanding place value fully requires many hands on experiences.
What is mathematical literacy? To answer this question we must look at the meaning of literacy in general. In the narrowest sense, literacy refers to the ability to read, write, speak, and use language
A site with geopolitical data, statistics on the human population, Earth and more. The main kind of data you can find here is population statistics of regions, countries, provinces and cities. Next to that there are some statistics on economic factors like wealth, infrastructure; statistics on natural phenomena; ....... and yet, even more."