【實用教育app】Appacus|最夯免費app-綠色工廠好玩App

Learn the abacus.~*~*~The most intuitive way to learn the abacus~*~*~Suitable for Abacus learners of all ages.Get started here: http://youtu.be/wYSEpaG9k-4Features:+Counting in 7 place values.+Basic Addition and Subtraction in 7 place values.+Finger Skills+Addition with Little Friends+Automatic Hints for each level+TutorialsAppacus:+Your goal number is circled in red!+The current number you are counting is shown on the white circle on the divider.About the Abacus:+Bottom beads are each worth one.+The top bead is worth 5.+Each column of beads represents one place value!Counting:+The Appacus automatically clears (resets to zero) after you count to the correct amount!+Click Hint! or Tutorial for more helpAddition:+Keep adding on! +Click Hint! or Tutorial for more helpFinger Skills:+Use the least number of taps.+Always move the top-bead first.+Count left to right.Addition with Little Friends:+Uh oh! Sometimes you don't have enough beads.+To add four, add on the top five-bead, and subtract one bottom bead. +5 -1 = 4!