The powerpoint starts with recapping the different inequality signs.
There is then a game of 'if this is the answer what is the question' linking to the fact that finding bounds is like being given the answer to a rounding question and working backwards to find what numbers could have been in the question.
Then to explain how we find the upper and lower bounds I have used a number line with colour coding on what numbers would round, I have then zoomed in on the last section a few times to show we get closer and closer to the upper bound.
Next is a slide to show the upper and lower bounds written just as bounds and also as an error interval.
Finally there are 5 questions each on finding the error interval of a numbers rounded to 10, 100, 1dp and 2dp.
There is then a game of 'if this is the answer what is the question' linking to the fact that finding bounds is like being given the answer to a rounding question and working backwards to find what numbers could have been in the question.
Then to explain how we find the upper and lower bounds I have used a number line with colour coding on what numbers would round, I have then zoomed in on the last section a few times to show we get closer and closer to the upper bound.
Next is a slide to show the upper and lower bounds written just as bounds and also as an error interval.
Finally there are 5 questions each on finding the error interval of a numbers rounded to 10, 100, 1dp and 2dp.
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A very good resource. Well set out and a real bonus to go from whole numbers to decimal places
Good resources. Thanks for sharing.
Just what was needed, thank you for sharing.
Yes, love the progression and how you build up to the upper bound which is a concept which some students struggle with. Thank you so much for sharing!
Sooooooo good!!!!! I love how it develops gradually and how it revises through the necessary topics and then leads on to the upper and lower bounds!
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