Description Learning Goals for Level C Building on the number-writing skills developed in Level B, this level focuses on helping children grasp the basic concept of addition through practice with adding 1 through 4. Book (Volume/Month) - Week - Learning Content C1: Weeks 1-4 Understanding Adding 1 (the next number) The next number and adding 1 Adding 1: (1~9)+1, (1~14)+1, (1~19)+1, (1~25)+1, (1~30)+1, (1~60)+1, (1~70)+1, (1~80)+1, (1~99)+1, (1~200)+1, (1~999)+1 Achievement Test C2: Weeks 1-4 Understanding Adding 2 Adding 2: (1~8)+2, (1~17)+2, (1~22)+2, (1~28)+2, (1~35)+2, (1~40)+2, (1~45)+2 Achievement Test C3: Weeks 1-4 Understanding Adding 3 Adding 3: (1~9)+3, (1~16)+3, (1~19)+3, (1~26)+3, (1~29)+3, (1~32)+3, (1~36)+3 Addition Making Sums of 10 Achievement Test C4: Weeks 1-4 Adding 4: (1~10)+4, (1~15)+4, (1~19)+4, (1~26)+4 Addition Making Sums of 10 Achievement Test C5: Weeks 1-4 Comprehensive Practice with Adding up to 4 Up to (1~6)+4, up to (1~9)+4, up to (1~16)+4, up to (1~19)+4 Final Test