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7th series of #MathisEZ: What is Positive and Negative Numbers? The explanation of #MathisEZ: https://scratch.mit.edu/projects/701183420/ The previous series(6th): https://scratch.mit.edu/projects/769557623/ The next series(8th): https://scratch.mit.edu/projects/771023582/ The #MathisEZ studio: https://scratch.mit.edu/studios/31722383/ #MathisEZ