Activities/Abacus: Difference between revisions
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The current value is always displayed on the frame. Experiment and you will quickly learn to write and read numbers. | The current value is always displayed on the frame. Experiment and you will quickly learn to write and read numbers. | ||
'''Examples:''' In the gallery of images above, the number 54321 is shown on each of the different abaci. | '''Examples:''' In the gallery below, several simple examples are shown. In the gallery of images above, the number 54321 is shown on each of the different abaci. | ||
<gallery> | |||
File:Abacus-1.png|1 bottom bead is up, corresponding to 1 unit | |||
File:Abacus-5.png|1 top bead is down, corresponding to 5 units | |||
File:Abacus-5b.png|5 bottom beads are up, also corresponding to 5 units | |||
File:Abacus-6.png|1 bottom bead is up and 1 top bead is down, corresponding to 6 units | |||
File:Abacus-10.png|5 bottom beads are up and 1 top bead is down, corresponding to 10 units (time to "carry" to the left) | |||
</gallery> | |||
'''Note:''' The display always assumes a fixed unit column, but you can override this choice. | '''Note:''' The display always assumes a fixed unit column, but you can override this choice. | ||