Hello! I'm on my first placement and have to teach Maths to a top set Year 6 class tomorrow for an observation. About half of the children are aiming for a Level 6 at the end of this year. I'm teaching a lesson about plotting averages on a frequency chart and comparing two sets of data tomorrow, and I want to give the HAs something investigative to do as an extension. I just can't think of anything, and I can't find anything on the internet. If anybody had any suggestions, that would be wonderful!