As part of a big push across school, Year 4 have been using practical resources to look at X by 10 and 100. We are trying to show that we do not just add 0s but instead, we move each digit 1 place to the left (for X by 10) and 2 places to the left (for X by 100). This may work sometimes at the start of Year 4 but, as we move through the rest of KS2, and we have to start multiplying by decimals, this will teach a misconception. We have shown that if we have a place with no digit there then we will include a place holder which is the 0. The children have really enjoyed using the counters and also being up out of their seats being physically moved when they have been X by 10 and 100. 

Today, we have been completing a scientific experiment to see which weighs more out of an inflated balloon or a deflated balloon. We initially made our predictions and then we worked ingroups of 3 to try to attempt to work out this investigation. We used a coat hanger as a balancing scale. We ensure that we kept it a fair test by having the same amount of string and sellotape on both sides of the coat hanger. That way, we would only be measuring the actually weight of the balloons. In the end, we found out that the balloon which was inflated weighed more because air is not a "nothing" and does actually hold weight. This is why we can feel the wing and how hang gliders are able to stay in the air.