5 September September September 2015 Prepared By: Mr. Raafat Haroun 1

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5 September September September 2015 Prepared By: Mr. Raafat Haroun 4 Grade Levels: Subject: Duration: Math 90 minutes

5 September September September 2015 Prepared By: Mr. Raafat Haroun 5 This lesson is talking about what the percentage is and how do we apply this concept in calculating some problems related to percentage. Then, ask the students to make a task related to the lesson

5 September September September 2015 Prepared By: Mr. Raafat Haroun 6 By the end of the lesson the student must be able to: Realize the concept of percentage Convert from percentage into fraction / decimal Convert from percentage into fraction / decimal Convert from fraction / decimal into percentage Convert from fraction / decimal into percentage calculate the percentage of an amount with respect to its total. calculate the percentage of an amount with respect to its total. Use the pie chart to represent the application of percentage in life Use the pie chart to represent the application of percentage in life

5 September September September 2015 Prepared By: Mr. Raafat Haroun 7 School Book School Book ml ml ml ml

5 September September September 2015 Prepared By: Mr. Raafat Haroun 8 Time Capsule This is a good exercise for practicing reaching consensus and for team members to understand each others' values. Have each member of the team list five items that they feel should be included in a time capsule that will be opened by another civilization in five thousand years' time. Each member of the team should then explain the reasons for their choice. The team then reaches consensus on which five objects should be included in the time capsule. Ask each team to write their final choice of items on a flipchart and discuss and defend their choices with the whole group. 10 min

5 September September September 2015 Prepared By: Mr. Raafat Haroun 9 20 min

5 September September September Prepared By: Mr. Raafat Haroun

What is this sign?!!!!!! 5 September September September Prepared By: Mr. Raafat Haroun

It’s a ratio, and its 2 nd term is September September September Prepared By: Mr. Raafat Haroun

Oh, thank you.. But What about its name? 5 September September September Prepared By: Mr. Raafat Haroun

Its name is 5 September September September Prepared By: Mr. Raafat Haroun

Can I convert from fractions into decimals and vice versa? 5 September September September Prepared By: Mr. Raafat Haroun

Sure!! Let us see 5 September September September Prepared By: Mr. Raafat Haroun

We can put ¾ in the form of decimal as following: following: 5 September September September Prepared By: Mr. Raafat Haroun

Can i put in the form of fraction? form of fraction?Simplifying Sure my dear, means 5 September September September Prepared By: Mr. Raafat Haroun

But! Can I convert ¾ Into percentage? Sure, and that by multiplying by 100 multiplying by 100= 5 September September September Prepared By: Mr. Raafat Haroun

Can you tell me about the rules of applications of percentage in life Sure my dear 5 September September September Prepared By: Mr. Raafat Haroun

Application s % ProfitLoseDiscount 5 September September September Prepared By: Mr. Raafat Haroun

The loss = cost price – selling price The profit = selling price – cost price 5 September September September Prepared By: Mr. Raafat Haroun

Percentage of profit Percentage of profit = profit c.p. X 100% 5 September September September Prepared By: Mr. Raafat Haroun

Percentage of loss Percentage of loss = loss c.p. X 100% 5 September September September Prepared By: Mr. Raafat Haroun

Example : Example : 5 September September September Prepared By: Mr. Raafat Haroun

Ahmed bought some goods for LE September September September Prepared By: Mr. Raafat Haroun

And sold them for LE September September September Prepared By: Mr. Raafat Haroun

Find Find His percentage of profit. His percentage of profit. 5 September September September Prepared By: Mr. Raafat Haroun

Solution : Solution : 5 September September September Prepared By: Mr. Raafat Haroun

The profit = selling price – cost price = 5400 – 4800 = LE September September September Prepared By: Mr. Raafat Haroun

= X 100% = 12.5% Then Percentage of profit Then Percentage of profit 5 September September September Prepared By: Mr. Raafat Haroun

Example : Example : 5 September September September Prepared By: Mr. Raafat Haroun

Convert each of the following percentage to a decimal 5 September September September Prepared By: Mr. Raafat Haroun

25% (1) (1) (2) (2) 40% 5 September September September Prepared By: Mr. Raafat Haroun 6.3%

Solution : Solution : 5 September September September Prepared By: Mr. Raafat Haroun

25% =25÷100 =0.25 (1) (1) 5 September September September Prepared By: Mr. Raafat Haroun

(2) (2) 40% = 40÷10 100÷10 = 4 10 =0.4 5 September September September Prepared By: Mr. Raafat Haroun

(3) (3) 6.3% = 6.3 X X 10 = = September September September Prepared By: Mr. Raafat Haroun

(4) (4) 3 3 ∕ 5 % = = September September September Prepared By: Mr. Raafat Haroun

5 September September September 2015 Prepared By: Mr. Raafat Haroun 40 I’ll divide the class into groups of 4 students each I’ll divide the class into groups of 4 students each (5 minutes) (5 minutes) ask them to download the assessment file then starting in solving the problems in it ask them to download the assessment file then starting in solving the problems in it (20 minutes ) (20 minutes ) after solving these problems, let each group state and justify the answer. after solving these problems, let each group state and justify the answer. (10 minutes ) (10 minutes )

5 September September September 2015 Prepared By: Mr. Raafat Haroun min