Abacus Deluxe vs Learning US History

Abacus Deluxe is a simulation of a real Chinese abacus with many special additional features. The abacus is one of the first machines used for calculating. With this abacus students can learn to count and do basic arithmetic in a fun interactive way. Abacus Deluxe is a great tool for teaching place value concepts to elementary students. A typical abacus is made from a wooden frame, with either bamboo or metal rods, and wooden or ceramic beads. People who master the abacus spend a great deal of time practicing the use of the device. With Abacus Deluxe students can practice math in a fun and interactive way and just like an abacus master become faster with mental math than a person using an electronic calculator. In China and other parts of Asia the abacus is still used widely to count and calculate. We designed our abacus to be a fun way to learn counting, place value and calculating both small and large numbers.

Get U.S. history practice and diagnostic exams, view answer explanations, using an intuitive and cool quiz interface. The questions and corresponding explanations are organized according to 21 major time periods of History of America. Study and learn about history of the world,covering early america history to modern america times, using simple and effective flashcards screen. This app will help you training and learning the american historical events and figures in depths. Our educational app content suitable for history enthusiasts, students, teachers and researchers. Once you have downloaded the app, you can access all the content offline on any mobile device or tablet. Properties : - There are 2 quiz mode. Diagnostic Quiz and Practice Quiz - In diagnostic quiz, you can detect the learning level. - In practice quiz, you can play quiz by selecting any us history concept. View question explanation when you answer using this quiz mode. - Study and learn usa history knowledge using flashcards. - You can review answered questions and its explanation at any time. - Follow your detailed quiz performance at any time. - No internet connection needed. High School US History app include at the following concepts: First Americans Age of Exploration American Colonial Era Road to Revolution American Revolutionary War Early Nation Jeffersonian Era Industrial Revolution Age of Jackson Slavery in America Civil War Reconstruction Gilded Age & Progressive Era World War I The 1920s Great Depression World War 2 Post-War Era Civil Rights Era Vietnam War Era Modern America