Counting Up: a subtraction counting strategy in which a student counts up from one part to the whole in order to find the missing part. Example: 9 6 = ? The student would count starting at 6, saying 8, 9” determining that, by counting up three numbers, the missing part of the – “7, number sentence is ‘3’. Counting Back: a subtraction counting strategy in which a student counts back from the total in order to find the missing part. Example: 9 6 = ? – The student would count starting at 9, saying 7, 6” determining that, by counting back three numbers, the missing part of the number “8, sentence is ‘3’.
Counting Up: a subtraction counting strategy in which a student counts up from one part to the whole in order to find the missing part. Example: 9 – 6 = ? The student would count starting at 6, saying “7, 8, 9” determining that, by counting up three numbers, the missing part of the number sentence is ‘3’. Counting Back: a subtraction counting strategy in which a student counts back from the total in order to find the missing part. Example: 9 – 6 = ? The student would count starting at 9, saying “8, 7, 6” determining that, by counting back three numbers, the missing part of the number sentence is ‘3’.
Unit_1_NBT_A_1_Extend_the_Counting_Sequence.docx