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GeoGebraClasse GeoGebra

Copy of Two Color Counters

This applet can be used to model arithmetic of integers with two color counters. The yellow "chips" represent +1, and the red "chips" represent -1. The tool bar and input bar are available so that text and other tools can be used to model problems such as the example showing -3 + 2 = -1.
Use the two color counters to model the following: 1. 2 + 3 2. -2 + 3 3. 3 + (-4) 4. -2 + (-3) 5. 3 - 2 6. 2 - 3 7. -2 - (-1) 8. -1 - 4 9. 1 - (-2) 10. 2(3) 11. 2(-3) 12. -2(3) 13. -2(-3) 14. 6/2 15. -6/2