Lesson Plan 10 - Australian Broadcasting Corporation

1 Lesson plan 13 Food, Exercise & Energy Brief description Students use nutrition information to calculate the number of teaspoons of fat and sugar in their favourite food and drinks. Using tables provided, they convert the energy content into an equivalent amount of exercise. For example, 600ml lemonade = 18 tsps sugar, 1220 kilojoules, approx. 45 min running! They compare these results to their daily energy requirements. Source iStock Duration: 40 90 minutes total (two sessions) Year level: Middle to upper primary Topics: Nutrition, energy, researching and communicating Preparation: 5 to 10 minutes Extensions: ART: Use the results to design an educational poster about food energy and exercise Overview This activity can be conducted in numerous ways depending on age and ability please consider the individual needs of your class when planning and allocating times.

2 Session 1: Introduce Lesson (20 30 min) Whole class Perform Teacher Demonstration 13* (10 15 min) Sugar Shocker * download from Discussion Whole Class Research Nutrition Information (10 15 min) Select a range of foods Session 2 : Calculate sugar, fat and energy content (20 30 min) Individual Calculate sugar, fat and energy content and (30 60 min) equivalents Investigate and discuss possible ways to represent results graphically and design posters Whole Class Discussion (10 15 min) Lesson 13 Food, Exercise & Energy Page 1 2006 | ABC Science Online Materials and equipment Teacher Demonstration y Copy of Sugar Shocker available at.

3 Y Metric teaspoon(s) y Drinking glass y Sugar y Oil (cheap vegetable is fine) y Softdrink (two varieties if possible) y Chips (two varieties if possible) y Softdrink (two varieties if possible) y Chocolate bar (two varieties if possible) Poster Design The following are suggestions are all optional students may be able to bring some of these items from home: y Magazines / newspapers (for clippings) y Digital camera (to photograph foods, sugar, fat content) y Poster sized paper / cardboard y Printer y Pens, pencils, paints, coloured paper Chips and a drink There are 18 teaspoons of sugar in one 600 ml bottle of softdrink and 18 ml of fat in one 50 packet of chips and a total of 2270 kilojoules Lesson 13 Food, Exercise & Energy Page 2 2006 | ABC Science Online Objectives Students prior knowledge No prior knowledge is required or assumed for this Lesson plan .

4 Science / mathematics skills Students will: Use the Table 1: Estimated Energy Requirements to determine the amount boy or girl of average weight and height for a particular age and gender requires every day Use nutrition labels or other sources of information to determine the fat, sugar and energy content per serving of various food and drinks (eg internet resource such Calorie King) Convert sugar and fat content into number of teaspoons using the following conversion factors: 1 tspn of white sugar weighs 4 grams 1 tspn of fat (oil) weighs grams Use Table 2: Energy used in various activities or Table 2a: Energy Rates to convert energy content into minutes of various types of exercise for a particular weight Science / nutrition concepts Humans need to eat food for energy and essential nutrients The amount of energy in foods varies greatly The amount of other nutrients in food varies greatly The amount of energy different people need to consume per day varies greatly between individuals Exercise consumes large amounts of energy Every person should get plenty of exercise everyday Positive attitudes Students will Appreciate the value of research skills for making informed choices Develop an appreciation

5 For the complexity of human nutrition Develop and appreciation for the relationship between food energy (energy in) and exercise energy (energy out) Lesson 13 Food, Exercise & Energy Page 3 2006 | ABC Science Online Procedure Session1: Teacher Demonstration and discussion (20 30 min) Perform and discuss the Sugar Shocker teacher demonstration Convert the energy content into an exercise equivalent using either the formula or table provided (see Teacher Notes or Energy Fact Sheet) Repeat the demonstration to determine the sugar and/or fat (oil) content for a packet of crisps and/or a chocolate bar (use a medicine cup to show students the amount of fat/oil)

6 Discuss the variety of nutrients we need in our diet the National Health and Medical Research Council of Australia lists 28 essential vitamins and minerals Compare the energy content and nutritional value of snack foods and softdrinks to estimated daily energy requirements Example: Chips and a Drink The combined energy in one 600ml bottle of softdrink (~1200 kJ) and one 50g packet of potato chips (~1050kJ) is approximately 2250 kJ this represents almost one third (27%) of a moderately active 8 year old boy s total daily energy requirements but without providing any other essential vitamins or minerals Discuss the student task eg: research the nutrition information (by bringing in packets or labels, or by other means) of some food and drink products and bring them to class Session 2.

7 Convert sugar, fat and energy values (20 30 min) Individual/Groups (15 20 min) Students use the nutrition information they have collected to convert sugar and fat content into number of teaspoons Next they convert the energy content into an equivalent amount of energy using the tables provided or using the formula Discuss possible ways to represent values Whole Class (10 15 min) Examples might include sugar cubes to represent teaspoons sugar content blocks of butter to represent fat content Design Energy Posters Group or individual (30 45 min) Finish as homework or as an art exercise Discuss the Lesson Whole Class (5 10 min) Discuss the class findings and any changes to attitudes to food and eating behaviour Lesson 13 Food, Exercise & Energy Page 4 2006 | ABC Science Online Teacher s notes Table 1: Estimated Daily Energy Requirements The National Health and Medical Research Council of Australia provides Estimated Daily Energy Requirements for use in Australia and New Zealand.

8 They should be used cautiously and as a guide only. Individual differences and variations in levels of physical activity make predicting an individual s daily energy requirements extremely difficult. The estimates provided are for individuals of average height and healthy weight. Girls Age Weight Height BMR Little Light Moderate Heavy Vigorous (kg) (cm) Activity Activity Activity Activity Activity 7 121 4000 5700 6500 7300 8100 8900 8 128 4200 6000 6900 7700 8600 9400 9 133 4500 6400 7300 8200 9100 10000 10 138 4700 6700 7600 8500 9500 10400 11 144

9 4900 7000 8000 9000 10000 11000 12 151 5200 7400 8500 9500 10600 11600 13 157 5500 7800 8900 10000 11100 12200 14 160 5700 8100 9200 10300 11500 12600 15 162 5800 8200 9400 10600 11700 12900 16 163 5900 8400 9500 10700 11900 13100 17 163 5900 8400 9600 10800 12000 13200 Boys Age Weight Height BMR Little Light Moderate Heavy Vigorous (kg) (cm)

10 Activity Activity Activity Activity Activity 7 122 4300 6100 7000 7800 8700 9500 8 128 4500 6400 7300 8200 9200 10100 9 134 4800 6800 7800 8800 9700 10700 10 139 5100 7300 8300 9300 10400 11400 11 144 5400 7700 8800 9900 11000 12000 12 149 5800 8200 9300 10500 11600 12800 13 156 6200 8700 10000 11200 12400 1