This is a whole lesson introducing the topic of upper and lower bounds. 15 slides + worksheet.
The lesson is fun, with have plenty of MWB activities and excellent teaching slides and examples. It is appropriate for both the foundation and the higher tier! It looks at taking any number or length and calculating its upper and lower bound leaving it as an inequality. There is a second lesson, which looks at the area and more complicated problems involving bounds.
Both lessons include good starters, plenty of examples, lots of questions, a differentiated levelled worksheet with answers. Learning objectives, keywords and plenary. This is a very clear two lessons and has been very effective at teaching the full spectrum of questions that could up on this topic.
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