Stage 2 · The Four Operations & Estimation
2.1.1 What Addition Means
2.1 Addition & Subtraction: Putting Together and Taking Away
Point 1 of 6
2.1.1 What Addition Means
Core ideaPour two piles of candy into one bag and count the total — that's putting them together, written a + b.
Module goal. Move from counting to operating, building the real-world meaning of addition and subtraction, their inverse relationship, and column arithmetic for multi-digit numbers.