1. Topic-
 And You Thought Gasoline Was Expensive!
2. Content-
 Students create charts comparing the cost of a gallon of gasoline to gallons of other liquids -- mouthwash, house paint, fruit juice, and white-out, for example. Calculate, COLA, cost of living, economics, equation, gallon, gasoline, inflation, liquid, measure, measurement, pint.
3. Goals: Aims/Outcomes-
 Involve students with the use of technology to: 1. Compare different themes with their country with others. 2. Learn how to create graph using a website. 3. Develop analysis of data.
4. Objectives-
 Students will 1. Research the cost of a gallon of gasoline. 2. Calculate the costs of gallons of a variety of liquids. 3. Create charts showing the data they collect. 4. Discuss the data. 5. Use software or a free online tool to create graphs comparing the costs of a gallon of gasoline with that of five other liquids.
5. Materials and Aids-
 1. Ads from food, drug, auto parts, and/or home building supply stores. 2. Graph creation software or access to the online Create a Graph tool.
6. Procedures/Methods-

A. Introduction-

 Have your students considered that gasoline might be a bargain when compared with the price of other liquids they consume? Take bottled water, for example. A 16-ounce bottle of water costing \$1.09 works out to \$8.72 a gallon. That makes gasoline look like a real bargain! Of course, buying a gallon of water is usually cheaper than buying eight 16- ounce bottles of water; but for the purpose of illustration, the bottled water example puts the cost of gasoline in perspective.

B. Development-

 Students can do this activity individually or in small groups, in class or for homework. For an in-class activity, you might: 1. Provide students with newspaper ads from food, drug, auto parts and/or home supply stores so they can price a gallon of a variety of liquids, such as fruit drinks, house paint, mouthwash, auto engine oil, perfume, white-out, and so on. 2. Have students create charts with four columns: Liquid Product, Cost of Item, Size (Volume) of Item, Price per Gallon. 3. In the first row of the charts, students record the cost of a gallon of gasoline. In the remaining rows, students enter the information gleaned from the ads for a variety of other liquids. 4. Next have students use the cost of each of the other products on the chart to calculate the cost for a gallon of the product. (With younger students, these calculations could be done as a whole-class activity.

C. Practice-

 When they complete the activity, students should share the information they collected and discuss the cost of a gallon of gasoline relative to the cost of some other things they might purchase.

D. Independent Practice-

 Students can use the data they collect to create bar graphs providing a visual representation of the data. They can use art supplies, available software programs, or the free online Create a Graphtool to create the graph.

E. Accommodations (Differentiated Instruction)-

 1. Make the table with four columns: Liquid Product, Cost of Item, Size (Volume) of Item, Price per Gallon. 2. Look and save photos of the products of different countries with the prices.

F. Checking for understanding-

 Grade students' chart calculations on mathematical accuracy.

G. Closure-

 Students should be able to complete the chart and make a graph with the obtained data.
7. Evaluation-
 1. See if the charts are done such it is written in the instructions. 2. Compare the data in the chart with the graph, to check if it has the same information. 3. Students should make an analysis of their results, specifying with country have the products with less cost.

This Lesson Plan is available at (www.teacherjet.com)