This is a whole lesson introducing the topic of Upper and Lower Bounds (Error Intervals). It looks at taking any number or length and calculating its upper and lower bound leaving it as an inequality. This lesson is ready to go, with no prep required. It is also great for home learning and flipped learning. 17-slide presentation + ORGINAL VIDEO CONTENT + extra resources.The lesson includes:+ starter (on rounding)+ learning objectives (differentiated)+ keywords+ plenty of MWB activities + excell