New Zealand Curriculum: Level 2
Learning Progression Frameworks: Additive thinking, Signpost 4 to Signpost 4
These activities are intended for students who currently use a count on and back strategy to solve addition and subtraction problems with whole numbers to 20.
Target students should have already developed a degree of part-whole understanding in addition and subtraction contexts (joining and separating). They should have some number facts to call on, particularly number bonds to ten. Understanding of two-digit place value, including the structure of ‘teen’ numbers will support many of the activities described in this intervention. (show diagnostic questions)