Addition (exchanging)
LO: To add two-digit numbers to two-digit numbers (with exchange- Concrete and Pictorial) Today we have been building on our understanding of addition with exchanging by moving from concrete resources to pictorial representations . We began by using place value counters to represent two-digit addition calculations, carefully exchanging 10 ones for 1 ten when needed. This helped us to deepen our understanding of the value of each digit and why exchanging works. We then took our learning a step further by representing our calculations on our whiteboards. We drew either place value counters or base ten to show the tens and ones in each number, using our drawings to help us calculate the answers accurately. Throughout the lesson, we used our stem sentence to explain our thinking: “10 ones are equal to 1 ten.”