Today’s Lesson Finish Booklets Introduction to Different Food Types Measuring Energy Starting Small Activity

Booklets We will now be making small booklets. Once the booklets are made, we need to complete the work below on the following pages: – Page 1: Grade 7 Science – Semester One (Heading) – Page 2 & 3: Tell me some things about yourself. Do you have any brothers/sisters, favourite movie, favourite sport, what you find annoying etc. – Page 4 & 5: Tell me what you enjoyed and did not enjoy about Grade 6 Science. – Page 6 & 7: What would you like to do/learn about in Grade 7 Science – Page 8: What are you going to try harder to do in Science this year?

How do we get energy? Get into Groups of 4. There are 3 main types of energy found in our food. As a group, discuss what you think they are. Try and include 2 examples of each (one healthy/one unhealthy) for the 3 main food types

Why we need food? Your body needs food for different reasons. They are: – For energy – For growth and repair – To stay healthy Food can be broken down into three main types. They are: protein, carbohydrates and fats/lipids

Proteins Proteins are needed for growth and repair of cells. Proteins are made up of amino acids which are broken down in digestion. The broken down amino acids then can be made into specific amino acids the body needs.

Carbohydrates Carbohydrates are used for your immediate energy needs. There are different types of carbohydrates such as sucrose, lactose, glucose and fructose. Glucose, starch and glycogen are larger sugar molecules that can be made into smaller sugar molecules.

Fats Fats are used to store energy and to keep you warm. Some fats are bad for you (picture above), but some fats are VERY good for you (below). Good fats can be found in olive oil and avocado.

Measuring Energy Energy in measured in Joules. Food is normally measured in kJ (or X1000 joules). Different people require different amounts of energy, along with different amounts of nutrients Energy drinks may taste good – but they are normally not good for you!

Vitamins & Minerals You need small, regular amounts of vitamins and minerals to stay healthy. Examples include Vitamin A, B1, C, D, iron, calcium & iodine

Energy from Different Foods Different foods provide different amounts of energy. For example: – 1 gram of pure carbohydrates = 16 kj – 1 gram of pure protein = 16 kj – 1 gram of pure fat/lipids = 32 kj y-packed-foods/

Working Out Amounts of Energy Often, Nutrition Labels show us information in 100 grams. However – we don’t normally eat exactly 100 grams of a specific food (100 grams of oil anyone??) So – how can we work out how much food there is if we eat 50 or 200 grams??

An Example Food 1. Carbs = 20 grams per 100 grams Fat = 6 grams per 100 grams Protein = 12 grams per 100 grams. How much energy is released if I eat 200 grams? Which energy type will provide us with the most energy on this occasion?

Our Activity OK GOOGLE DRIVE LOVERS!! We are now going to use our laptops (yay – not!!). Open up a new google spreadsheet. Label it (YourName)Food and share it with me! Copy and paste the information from my google spreadsheet (it’s been shared with you) We will also make a second page for practice (look at my doc)

Continued Choose 6 different foods that students want to eat! Write them down onto the practice page Then search “Food Name” Nutrition Facts on Google Images for the amount of protein, fat and carbohydrates found in grams for each food. Listen for further instructions…….