Line By Line Choose the activity(ies) that best suit your students’ learning needs Unravel facts and questions to focus on stepping stones in a solution. Can be printed or viewed on the. Solve the mystery IWB Focus on the links between the steps in a solution by ordering the steps. Can be Put the steps in printed or viewed on the IWB order Identify what is being calculated in each step. Can Explain the steps be printed or viewed on the IWB Emphasise the importance of each step in a solution by writing a Write the mark scheme. Students can assess their answer against the given mark scheme. Print or view on the IWB Improve understanding of how marks are allocated by using the mark scheme to mark an incorrect solution. View on Marking exercise the IWB. . Mark scheme can be printed as support. Print Improve understanding of how marks are allocated by using the mark scheme to mark a n incorrect marking exercise solution. For printing. Mark scheme can be printed as support. Practice putting together a concise, clear QWC Focus onsolution to an exam-style question. Can be printed or viewed on the IWB Students can assess what they still Reflection need to learn and the grade they are working at. Test Print so students can learn the key yourself cards points. Take home or work in pairs. Content covered Functional Best buy GFEDC
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 D Percentages Calculate percentages of an amount C Calculation Multiply and divide numbers by multiples of powers of 10 C Percentages Calculate percentage increase and decrease Reflection Functional Best buy GFEDC
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! 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? Which shop has the cheapest dishwasher? What is 25% of £ 420? VAT is 20% What is the offer price at Syrruc? At Syrruc the recommended price is £ 420 Sogra asks for a The basic price £ 80 deposit 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? Functional Best buy GFEDC What is the total price at 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. Temoc £ 345 plus VAT at 20% We’ll pay the VAT! Sogra Syrruc RRP of £ 420 25% off RRP £ 80 deposit 12 instalments of £ 25. 50 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 420 – 105 = £ 315 345 + 69 = £ 414 12 x 25. 50 = £ 306 £ 315 is the cheapest 414 – 69 = £ 345 80 + 306 = £ 386 345 x 0. 2 = £ 69 420 x 0. 25 = £ 105 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? Functional Best buy GFEDC
Line By Line – Explain the steps Mrs Davis is going to buy a new dishwasher. Three shops offer the model she wants. Temoc £ 345 plus VAT at 20% We’ll pay the VAT! Syrruc RRP of £ 420 Sogra 25% off RRP £ 80 deposit 12 instalments of £ 25. 50 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 Explain the steps in the solution 12 x 25. 50 = £ 306 80 + 306 = £ 386 420 x 0. 25 = £ 105 420 – 105 = £ 315 345 x 0. 2 = £ 69 345 + 69 = £ 414 – 69 = £ 345 £ 315 is the cheapest Functional Best buy GFEDC
Line By Line – Write the mark scheme Mrs Davis is going to buy a new dishwasher. Three shops offer the model she wants. There are 5 marks. Sogra, instalments Temoc £ 345 plus VAT at 20% We’ll pay the VAT! Sogra total Sogra Syrruc reduction Syrruc RRP of £ 420 25% off RRP £ 80 deposit 12 instalments of £ 25. 50 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 Syrruc price Temoc unchanged = 12 x 25. 50 = £ 306 = 80 + 306 = £ 386 =420 x 0. 25 = £ 105 = 420 – 105 = £ 315 = £ 345 £ 315 is the cheapest at Syrruc Write a markscheme. What mistakes do you think people will make when doing this question? Answers Functional Best buy GFEDC
Line By Line – The mark scheme Mrs Davis is going to buy a new dishwasher. Three shops offer the model she wants. Temoc £ 345 plus VAT at 20% We’ll pay the VAT! Sogra Syrruc RRP of £ 420 25% off RRP £ 80 deposit 12 instalments of £ 25. 50 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 Sogra total Syrruc reduction = 12 x 25. 50 = £ 306 = 80 + 306 = £ 386 =420 x 0. 25 = £ 105 = 420 – 105 = £ 315 Syrruc price Temoc unchanged M M = £ 345 B £ 315 is the cheapest at Syrruc A Functional Best buy GFEDC A
Line By Line – Marking exercise Mrs Davis is going to buy a new dishwasher. Three shops offer the model she wants. Temoc £ 345 plus VAT at 20% We’ll pay the VAT! Sogra price Syrruc reduction Syrruc RRP of £ 420 Syrruc price 25% off RRP £ 80 deposit 12 instalments of £ 25. 50 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 = 12 x 25. 50 = £ 306 =420 x 0. 25 = £ 105 = 420 – 105 = £ 315 0 0 Mark this answer 1 Temoc VAT = 0. 2 x 345 = £ 69 Temoc price with VAT = 345 + 69 = £ 414 Temoc price, no VAT = £ 345 1 £ 306 is the cheapest at Sogra 0 Functional Best buy GFEDC 2/5 marks
Line By Line – Print marking exercise Mrs Davis is going to buy a new dishwasher. Three shops offer the model she wants. Sogra price = 12 x 25. 50 = £ 306 Syrruc reduction =420 x 0. 25 = £ 105 = 420 – 105 = £ 315 Temoc £ 345 plus VAT at 20% We’ll pay the VAT! Syrruc price Sogra Mark this answer Temoc VAT Syrruc RRP of £ 420 25% off RRP £ 80 deposit 12 instalments of £ 25. 50 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 = 0. 2 x 345 = £ 69 Temoc price with VAT = 345 + 69 = £ 414 Temoc price, no VAT = £ 345 £ 306 is the cheapest at Sogra /5 marks Functional Best buy GFEDC
Line By Line – Focus on QWC Mrs Davis is going to buy a new dishwasher. Three shops offer the model she wants. 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 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 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. Functional Best buy GFEDC
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 F D D Calculate percentages of an amount Multiply and divide numbers by multiples of powers of 10 Calculate percentage increase and decrease 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. Functional Best buy GFEDC C C
Line By Line – Test yourself cards These cards have 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. Functional Best buy GFEDC
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