You'll get a bronze medal when you complete a level 2 times and a silver medal after 5 completed rounds. The maximum number of points (18 knowledge points) is achieved when you pass all 9 levels. With a standard computer the beads are moved with the mouse.Ĭalculation of knowledge pointsEach completed game level gives 2 knowledge point in Abacus - Basics. In this game, it is only possible to have the correct fingering with an iPad or other touchpad. This means that the right index finger moves the beads above the beam and the right thumb moves the beads beneath the beam. When using a real abacus, it is important to have the correct fingering. When two beads has been counted in the upper deck, these are switched for one bead in the lower deck of the rod to the left. When five beads have been counted in the lower deck, these are switched for one bead in the upper deck of the same rod. The beads in the upper deck get their values when they are moved down to the beam. In the lower deck, the beads get their values when they are moved upwards to the narrow strip, the beam. The next rod represents the hundreds, and so on. The beads in the second rightmost rod matches the tens. The beads in the rod at the far right represents the ones. Once you master this game, please move on to practicing counting addition on abacus.Įach of the two beads of the upper deck of the abacus represents five units, and each of the five beads on the bottom deck of the rods is worth one unit. This is only the basics of using an abacus. But that counting frame didn't work the same way as an abacus does.
Description of the abacus and game instructionsĪbacus, which is a Chinese counting frame, has been around for thousands of years and is China known as suan pan.īefore the pocket calculator ca to the western world, the teachers used a counting frame in schools to teach counting.
0 kommentar(er)
