Assumptions about what students know and are able to do coming into this lesson (including language needs): Students know what a is and that percent means out of 100. Students know how to simplify fractions, how to change percents to fractions and to decimals and how to multiply by fractions and decimals Outcome(s) By the end of this lesson students will know and be able to: Recognize that proportional reasoning involves comparisons of the relationships among ratios Compute unit rate. Solve problems (discounts, tax, percent decrease) Instructional Resources/Tools Sunday circulars or, alternatively, store circulars can be accessed on the web For example: On Line Shopper Chart paper, graph paper, journals Anticipated Student Preconceptions/Misconceptions 5% = .5 Discount = price Assessment Pre-assessment/ Formative (This could be assigned as Summative (optional) homework. Choose some or all from the following.) 1. Represent 17% as a fraction. iPad Apps are on sale at 15% off. If 2. Using 17%, write a statement: the original price is $1.99 what is the ____ out ___ people prefer Crest Toothpaste. discount and what will you pay for 3. Convert several percents to fractions and decimals. the App, including Mass tax (6 ¼)? For example: ¾ = = _______ as a decimal Specific notes to teacher: _______ as a fraction = 67% = _________ as a decimal Teacher circulates and observes ________ as a fraction = __________ as a percent = students responding. 0.05 Reinforce vocabulary 4. ½ x ¼ = __________ Discount 5. 1.02 x 0.07 = _________ Convert 6. Does percent off (discount) mean the person pays less or Apps more than the original price? 7. Sneakers are on sale at 15% off. If the original price is $150, what is the discount and what will you pay for the sneakers?
Assumptions about what students know and are able to do coming into this lesson (including language needs): Students know what a is and that percent means out of 100. Students know how to simplify fractions, how to change percents to fractions and to decimals and how to multiply by fractions and decimals Outcome(s) By the end of this lesson students will know and be able to: Recognize that proportional reasoning involves comparisons of the relationships among ratios Compute unit rate. Solve problems (discounts, tax, percent decrease) Instructional Resources/Tools Sunday circulars or, alternatively, store circulars can be accessed on the web For example: On Line Shopper Chart paper, graph paper, journals Anticipated Student Preconceptions/Misconceptions 5% = .5 Discount = price Assessment Pre-assessment/ Formative (This could be assigned as homework. Choose some or all from the following.) Summative (optional) 1. Represent 17% as a fraction. 2. Using 17%, write a statement: ____ out ___ people prefer Crest Toothpaste. 3. Convert several percents to fractions and decimals. For example: ¾ = = _______ as a decimal _______ as a fraction = 67% = _________ as a decimal ________ as a fraction = __________ as a percent = 0.05 4. ½ x ¼ = __________ 5. 1.02 x 0.07 = _________ 6. Does percent off (discount) mean the person pays less or more than the original price? 7. Sneakers are on sale at 15% off. If the original price is $150, what is the discount and what will you pay for the sneakers? iPad Apps are on sale at 15% off. If the original price is $1.99 what is the discount and what will you pay for the App, including Mass tax (6 ¼)? Specific notes to teacher: Teacher circulates and observes students responding. Reinforce vocabulary Discount Convert Apps