In maths, in year 3 Picasso class, we have been using place value grids and place value counters to support our understanding of column addition. Sometimes the addition requires us to exchange ten ones for one ten and sometimes it requires us to exchange ten tens for one hundred. It helped us understand that a digit - 4 for instance, depending on which column it lays can mean 4 or 40 or 400. If we are adding a 4 digit in the tens column, we are really adding 40!