Cooking With The Sun-Books Pdf

Cooking With The Sun
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TEACHER OVERVIEW, 8 dowel c diameter or chop stick vegetables beans and legumes and bread A dark. Materials for Solar Cooker 2 simple cone lightweight shallow pot not oversized cooks best. 1 90 x 90 cm poster board The Texas Solar Cookers is a network of interested. aluminum foil persons throughout the State You might be able to. rubber cement find a local resource through this contact Monica. 3 brass brads Salyer PO Box 690810 San Antonio TX 78267. appropriate tool for punching holes for 0810 phone 210 219 6448 or email omei stic net. 1 box 30 cm x 30 cm x 30 cm i e SUMMARY OF ACTIVITIES. copier paper box without lid, Materials for Solar Cooker 3 modified box Activity 1 Teacher Introduction 10 minutes. panel cooker Explain to the class that for the next unit of study. 1 cardboard box approximately 30 cm they will be learning about solar cookers how. per side they can be equally effective as conventional forms. cutting tool of cooking and how they can come in various. black paint designs If you were able to contact a local person. paint brush with a solar oven arrange for him or her to visit. your class on this introductory day for a brief, BACKGROUND INFORMATION demonstration A great attention getter would be. to bake some cookies in the visitor s oven for the. The general principle of a solar cooker is to heat students to enjoy The class will build 3 different. food using the sun which shines directly and can types of solar cookers and test record and compare. also be reflected Dark cooking utensils absorb the heating capabilities of each cooker Students. heat energy A glass top traps the heat inside will also complete an exercise to help them. In this activity students will be measuring the understand the relationship between Celsius and. temperature of cooking surfaces for three different Fahrenheit degree measurements. types of solar cookers a reflective box cooker a, cone shaped cooker and a black box cooker This Activity 2 Assessment of Current Student. activity concentrates on measuring and comparing Knowledge 15 minutes. the temperatures produced by these cookers To assess what students already know prompt a. class discussion based on the 3 questions listed, In commercially available solar ovens cooking below Based on this discussion create and.
times are comparable to a conventional oven as display a graphic organizer of the points that were. the temperature can reach 450 F In these student discussed which can be displayed throughout the. made cookers cooking times will be much longer unit of study Refer to the Teacher Resource Guide. as they will typically reach a maximum 250 F in for sample organizers. direct sunlight Some quick cooking foods include, hot dogs sliced frozen cookie dough s mores 1 How can the sun be used to cook food. and nachos Foods that will cook in 1 2 hours 2 Do you think people use the sun to cook food. include grains like rice fruits and above ground anywhere in the U S In the world. vegetables Foods taking 3 4 hours include root, 2 COOKING WITH THE SUN Unit of Study No 12. TEACHER OVERVIEW, 3 How do you think you could build a cooker Activity 4 Celsius and Fahrenheit. using materials you have in your home What Worksheet 30 minutes. kind of materials would you use 1 This worksheet can be completed as an. interactive class exercise as students will need, See Teacher Resource Guide for alternative or direction from the teacher Teacher can display. additional assessment activity the contents of the worksheet so the entire class. can view it overhead transparency chalkboard, Activity 3 Vocabulary and Reading Passage etc and work through it together In this.
45 minutes lesson students can also draw a comparison of. Each student will need a copy of the Reading Fahrenheit and Centigrade thermometers. Passage and the Student Data Sheets which 2 Tell the students that the freezing point on a. include reading comprehension questions Fahrenheit thermometer is 32 F and the freezing. vocabulary words and the Lab Activity As an point of a Centigrade thermometer is 0. alternative to making copies the Student Data 3 Instruct the students to label the boiling points. Sheets can be displayed so the entire class can of water. view them and copy the information into their F 212 and C 100. science notebook Instruct students to study the 4 Ask the students how many lines are on a. Reading Passage and complete the questions and Fahrenheit thermometer between the freezing. vocabulary This activity will help them learn how and boiling point. the sun can be used to cook our food and about 212 32 180 lines. several designs of solar cookers that are currently 5 Ask the students how many lines are on a. used today Key vocabulary words in the Reading Centigrade thermometer between the freezing. Passage will assist them in understanding the Lab and boiling points. Activity instructions For students who wish to 100 0 100 lines. learn more of the detailed principles about solar 6 Instruct students to determine the ratio of lines. cookers direct them to the appropriate resources The ratio of lines is 180 lines to 100 lines or. Suggested resources can be found in the Teacher 180 100 When this fraction is reduced by. Resource Guide At the end of this activity collect dividing by 20 the ratio of lines is simplified as. and grade the student s work Return their graded 9 lines F. work the following day 5 lines C, The rest of the Fahrenheit thermometer below. Homework Assignment Key Vocabulary List zero can be drawn in. 1 Instruct students to create in their science 7 It is apparent that the Fahrenheit thermometer. notebooks meaningful sentences that reflect has an added piece on the bottom after the. an understanding of the definition of each freezing point 32 degrees F to include a. vocabulary word Students should have written reading down to zero The extra piece of. the definition of the words in their science the Fahrenheit thermometer is subtracted. notebooks during class See Teacher Resource when converting to the shorter Centigrade. Guide for alternative vocabulary homework thermometer scale The extra 32 piece is. 2 Collect and grade this assignment the next day added when converting from the shorter. Centigrade scale to the longer Fahrenheit scale, Drawing these thermometers side by side and. Unit of Study No 12 COOKING WITH THE SUN 3, No 12 TEACHER OVERVIEW. even adding some of the lines helps students before students conduct the lab See Teacher. visualize the reasonableness of their answers Resource Guide for general safety guidelines. 8 Based on the ratio of lines and the extra Demonstrate proper use and care of the. piece help students derive the equation for equipment used in the activity. converting degrees Fahrenheit to degrees, Centigrade Activity 6 Lab Activity 45 minutes. F C x 9 5 32 1 Divide the class into small groups and instruct. 9 Ask students to convert 30 C to Fahrenheit each group to obtain the materials for one Lab. F 30 C x 9 5 32 54 32 86 F Activity kit You can instruct students to obtain. 10 Ask students to derive an equation to convert materials for one solar cooker at a time. degrees Centigrade to degrees Fahrenheit 2 Instruct students to follow the directions to. C 5 9 x F 32 build each solar cooker, 11 Ask students to convert 60 F to Centigrade 3 Once all the groups have completed building.
C 5 9 x 60 32 5 9 x 28 15 6 C their assigned solar cookers gather the. 12 Have students look at their drawings to materials you will be responsible for providing. estimate if these answers look reasonable to the groups water at room temperature and. thermometers and instruct students to follow, Activity 5 Pre Lab 45 minutes you to the outside location to conduct the. 1 The teacher should read the Lab Activity tests Students should gather their 3 cookers. instructions first their timers and their sunglasses. 2 Instruct students to wear sunglasses for this 4 Once the groups have positioned their cookers. activity to ensure that bright reflection to the so they will get the maximum exposure to the. eyes is reduced The teacher can determine if sun distribute 200 ml of water in beakers to. each group will construct one model of solar each group. cooker with different groups constructing 5 Instruct students to carefully place the beaker. different models for comparison or if each in the cooker and take an initial temperature. group will build all three To ensure that all reading start the timer and continue taking. students participate instruct the groups to readings according to their lab instructions. assign who will be responsible for each step 6 Once all the groups have taken their. in the activity before beginning To prevent temperature readings instruct students to share. students from assigning similar tasks to the their measurements and calculations and record. same students in each unit the teacher may them on their Lab Report Form. elect to assign the responsibilities 7 Instruct students to create a graph of their. 3 Explain to the class that the purpose of the temperature readings A sample graph is. Lab Activity is to gain an understanding provided on the next page. that solar cookers come in different designs 8 Instruct students to complete the answers to the. and are simple to build Students will build lab questions. 3 simple solar cookers and test their heating, abilities They will graph their results Before Activity 7 Post Lab 15 minutes. performing the lab students can be given the After students have completed their Lab Report. lab instructions to read and summarize the Forms and graphs discuss their results and their. steps involved The summary can be in the answers to the lab report questions as a class. form of a brief chart Review safety guidelines, 4 COOKING WITH THE SUN Unit of Study No 12. TEACHER OVERVIEW No 12, Activity 8 Assessment 30 minutes such as cover glass thickness type and rating of. Distribute a copy of the Assessment Questions to insulating material type and rating of reflective. each student Instruct each student to work alone panels etc and propose a design that uses. and answer the short answer and multiple choice materials obtainable at a hardware or home. questions Collect the handouts grade and return improvement store If time and resources are. them to the students available the groups can build and test their new. designs This activity can be expanded to be a solar. ADDITIONAL ACTIVITY cooker design contest by having each group be. Design and build an advanced solar cooker responsible for designing building and cooking a. Working in their same groups students can common dish in a cooker Winning results would. research commercially available solar cookers be based on the speed with which the cooker. and other resources for solar cooker construction produced the finished dish Solar brownies cookies. through the Internet A good place to start would or other desert bars would be popular choices and. be at www solarcooking org Instruct students to can be obtained as boxed or frozen ingredients. identify the components and their specifications, Temperature Change Cooker 1.
of Water in 3 Solar Cookers Cooker 2, Temperature Fahrenheit. 0 00 0 02 0 04 0 06 0 08 0 10 0 12 0 14 0 16 0 18 0 20. Time Minutes, FIGURE 1 Sample graph of heating abilities of 3 solar cookers. Unit of Study No 12 COOKING WITH THE SUN 5, No 12 TEACHER. READINGOVERVIEW, Cooking With The Sun, HIGHLIGHTS example when sunlight hits a surface with an. area of 1 square meter there is about 1 000, Solar cookers can be used watts of energy from the sun on that surface.
everyday or for solar picnics Compare this to your toaster oven which uses. about 1 000 watts In a solar cooker sunlight is, They come in many types concentrated into a cooking area that gets hot. enough to cook food If more sunlight can be, They are easy to build or can be captured more power can be generated Solar. cookers sometimes have an insulated cooking, bought ready made chamber to prevent heat from escaping. Solar cooking works well is, easy fun and good for the SOLAR COOKER DESIGNS. environment Just as there are many kinds of conventional. cookers ovens stovetops broilers microwave, ovens there are many kinds of solar cookers.
SUMMARY The simplest type of solar cooker is the Cookit. Most of you know how it can, be hot enough to fry an egg on. the pavement But have you ever, seriously considered actually. cooking with the sun In some, parts of the world solar cooking. is very popular In Texas it works, just as well and can be used. for everything from picnics to, everyday cooking, SOLAR COOKER.
SOURCE JUDY PEARSON, Solar cookers work because, sunlight carries lots of power For FIGURE 1 PANEL COOKER The Cookit panel cooker is simple but effective. 6 COOKING WITH THE SUN Unit of Study No 12, READING PASSAGE No 12. have a large area to collect sunlight and, therefore can generate high power but they. typically do not have an insulated cooking, chamber Therefore these solar cookers are. used similarly to a conventional stovetop, Some solar cookers use both a parabolic.
cooker which can focus direct sunlight in a, particular area resulting in high heat and an. insulated cooking chamber These cookers are, called solar concentrator ovens These ovens. operate like a conventional oven because they, can reach high temperatures Figure 4 shows. kinds of solar cookers to observe the differences in their efficiency By the end of the unit students should have an appreciation of the availability simplicity and cost effectiveness of using the sun as an energy source Students will compute Fahrenheit Centigrade conversions OBJECTIVES See Middle School Teacher Resource Guide for TEKS objectives and additional information regarding this

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