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Print marking exercise
Line By Line Choose the activity(ies) that best suit your students’ learning needs Improve understanding of how marks are allocated by using the mark scheme to mark an incorrect solution . View on the IWB..Mark scheme can be printed as support. Unravel facts and questions to focus on stepping stones in a solution. Can be printed or viewed on the IWB Solve the mystery Marking exercise Focus on the links between the steps in a solution by ordering the steps . Can be printed or viewed on the IWB Improve understanding of how marks are allocated by using the mark scheme to mark a n incorrect solution. For printing. Mark scheme can be printed as support. Put the steps in order Print marking exercise Identify what is being calculated in each step . Can be printed or viewed on the IWB Focus on QWC Practice putting together a concise, clear solution to an exam-style question. Can be printed or viewed on the IWB Explain the steps Emphasise the importance of each step in a solution by writing a mark scheme. Students can assess their answer against the given mark scheme. Print or view on the IWB Write the mark scheme Reflection Students can assess what they still need to learn and the grade they are working at. Test yourself cards Print so students can learn the key points. Take home or work in pairs. Content covered
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Line By Line – Content covered
F Percentages Understand that percentages mean hundredths E Calculation Break a complex calculation into simpler steps D Decimals Multiply and divide decimals by whole numbers Calculate percentages of an amount C Multiply and divide numbers by multiples of powers of 10 Calculate percentage increase and decrease Reflection
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Line By Line – Solve the mystery
The cards give clues to help you solve a mystery. Some give information, others ask questions. Solve the mystery! Which shop has the cheapest dishwasher? What is 25% of £420? VAT is 20% What is the total price at Sogra? What is the offer price at Syrruc? At Syrruc the recommended price is £420 Sogra asks for a £80 deposit The basic price at Temoc is £345 What is 20% of £345? Sogra asks for the rest in 12 instalments of £25.50 Temoc offer to pay the VAT on their machine Syrruc offers a reduction of 25% What is the offer price at Temoc? What is 12 x 25.5? Is it clear how you decided? Was there anything you didn’t need to work out? Explain how you solved the mystery. Include the order in which you used the cards. This is an exam question. What do you think the question is?
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Sogra Line By Line – Put the steps in order
Mrs Davis is going to buy a new dishwasher. Three shops offer the model she wants. She decides she will buy the cheapest one out of these three offers. Work out which shop she should go to. Explain carefully how you came to your decision marks 420 – 105 = £315 = £414 12 x = £306 £315 is the cheapest 414 – 69 = £345 = £386 345 x 0.2 = £69 420 x 0.25 = £105 Temoc £345 plus VAT at 20% We’ll pay the VAT! Syrruc RRP of £420 25% off RRP Sogra £80 deposit 12 instalments of £25.50 These are the steps in the solution. Put them in order and explain what is happening in each step. Can you insert them into the ‘running order’ for the mystery cards?
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Explain the steps in the solution
Line By Line – Explain the steps Mrs Davis is going to buy a new dishwasher. Three shops offer the model she wants. She decides she will buy the cheapest one out of these three offers. Work out which shop she should go to. Explain carefully how you came to your decision marks 12 x = £306 = £386 420 x 0.25 = £105 420 – 105 = £315 345 x 0.2 = £69 = £414 414 – 69 = £345 £315 is the cheapest Temoc £345 plus VAT at 20% We’ll pay the VAT! Syrruc RRP of £420 25% off RRP Sogra £80 deposit 12 instalments of £25.50 Explain the steps in the solution
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What mistakes do you think people will make when doing this question?
Line By Line – Write the mark scheme Mrs Davis is going to buy a new dishwasher. Three shops offer the model she wants. She decides she will buy the cheapest one out of these three offers. Work out which shop she should go to. Explain carefully how you came to your decision. 5 marks Sogra, instalments = 12 x 25.50 = £306 Sogra total = = £386 Syrruc reduction =420 x 0.25 = £105 Syrruc price = 420 – 105 = £315 Temoc unchanged = £345 £315 is the cheapest at Syrruc There are 5 marks. Write a mark-scheme. Temoc £345 plus VAT at 20% We’ll pay the VAT! Syrruc RRP of £420 25% off RRP Sogra £80 deposit 12 instalments of £25.50 What mistakes do you think people will make when doing this question? Answers
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M A Sogra M B A Line By Line – The mark scheme
Sogra, instalments = 12 x 25.50 = £306 Sogra total = = £386 Syrruc reduction =420 x 0.25 = £105 Syrruc price = 420 – 105 = £315 Temoc unchanged = £345 £315 is the cheapest at Syrruc Mrs Davis is going to buy a new dishwasher. Three shops offer the model she wants. She decides she will buy the cheapest one out of these three offers. Work out which shop she should go to. Explain carefully how you came to your decision. 5 marks Temoc £345 plus VAT at 20% We’ll pay the VAT! M A Syrruc RRP of £420 25% off RRP Sogra £80 deposit 12 instalments of £25.50 M B A
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Mark this answer 1 Sogra 2/5 marks 1 Line By Line – Marking exercise
Mrs Davis is going to buy a new dishwasher. Three shops offer the model she wants. She decides she will buy the cheapest one out of these three offers. Work out which shop she should go to. Explain carefully how you came to your decision. 5 marks Sogra price = 12 x 25.50 = £306 Syrruc reduction =420 x 0.25 = £105 Syrruc price = 420 – 105 = £315 Temoc VAT = 0.2 x 345 = £69 Temoc price with VAT = = £414 Temoc price, no VAT = £345 £306 is the cheapest at Sogra Mark this answer Temoc £345 plus VAT at 20% We’ll pay the VAT! Syrruc RRP of £420 25% off RRP Sogra £80 deposit 12 instalments of £25.50 1 2/5 marks 1
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Mark this answer Sogra /5 marks Line By Line – Print marking exercise
Mrs Davis is going to buy a new dishwasher. Three shops offer the model she wants. She decides she will buy the cheapest one out of these three offers. Work out which shop she should go to. Explain carefully how you came to your decision. 5 marks Sogra price = 12 x 25.50 = £306 Syrruc reduction =420 x 0.25 = £105 Syrruc price = 420 – 105 = £315 Temoc VAT = 0.2 x 345 = £69 Temoc price with VAT = = £414 Temoc price, no VAT = £345 £306 is the cheapest at Sogra Mark this answer Temoc £345 plus VAT at 20% We’ll pay the VAT! Syrruc RRP of £420 25% off RRP Sogra £80 deposit 12 instalments of £25.50 /5 marks
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Ask another pupil in the class to give you feedback on it.
Line By Line – Focus on QWC Mrs Davis is going to buy a new dishwasher. Three shops offer the model she wants. She decides she will buy the cheapest one out of these three offers. Work out which shop she should go to. Explain carefully how you came to your decision. 5 marks Temoc £345 plus VAT at 20% We’ll pay the VAT! Syrruc RRP of £420 25% off RRP Sogra £80 deposit 12 instalments of £25.50 Write out your solution to this question clearly and using correct mathematical statements. Ask another pupil in the class to give you feedback on it.
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Click below the button to reveal the grades
Warm up Line By Line – Reflection Click below the button to reveal the grades I can Understand that percentages mean hundredths Multiply and divide decimals by whole numbers Calculate percentages of an amount Multiply and divide numbers by multiples of powers of 10 Calculate percentage increase and decrease F D D C C Self assessment Self assess Find or write some evidence to support your assessment Write down your next steps You may wish to use the Test Yourself cards.
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Line By Line – Test yourself cards
These cards have the things you may need to learn in order to do Best buy questions. Copy down the ones YOU need or ask your teacher for a printout. How do you add or subtract decimals? How do calculate percentage change? Line up the decimal points. Form a fraction of the change over the original and convert to a percentage. How do you change a decimal to a percentage? How do you change a percentage to a decimal? Multiply by 100. Divide by 100. What does per cent mean? How do you calculate a percentage of an amount? Out of 100. Divide it by 100 then multiply by the percentage. How do you multiply decimals? How do you divide decimals? Do the whole number version, then estimate the answer in order to put the decimal point in the right place.
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