YR1_T2_LSN2

• Science
• Middelbare school
• havo, vwo
• Leerjaar 1

Get ready

• Your Laptop (join the lessonup)
• Your notebook.
• Your textbook.
• Pen & highlighter

Topic 2 Lesson 2

Plan for today

• Homework check
• Explanation T2.2 Food molecules
• Make 'Zoo animal nutritionist' exercises
• Skills 6: Teclu burner (part 1)
• (Make exercises in your textbook)

Homework check

• Answers for topic 2.1 are in the classroom
• Correct your answers in a different color (Answer wrong? write down the correct answer in the different color)
• I will call your name to check your homework

Learning goals

• I know the names of the 7 types of nutrients
• I know what the 7 types of nutrients are used for in the body
• I know in what kind of foods the different nutrients are present 
• I can read food labels and understand what calories, quantities and daily value mean
• I know what food indicators are and understand how they can be used to test the food for certain nutrients

Key words

• Nutrient
• Daily value
• Proteins
• Carbohydrates
• Minerals
• Vitamins
• Water 
• Fats
• Fibres

Food molecules

Food is made out of molecules. 

Nutrients are food molecules. 

There are seven types of nutrients:

• Carbohydrates
• Proteins
• Lipids
• Minerals
• Vitamins
• Water
• Fiber

Carbohydrates

Carbohydrates are for building and energy.

Sugars are small carbohydrates (glucose)

Starches are large carbohydrates

Good sources:

Grains, pasta, fruits, honey

Proteins

Proteins are for building, because cells are built out of proteins

Proteins are built out of amino acids

Good sources:

Meat, fish, eggs, beans

Lipids

Lipids are fats and they are used for energy.

Lipids contain twice as much energy as carbohydrates.

They are used for energy storage.

Good sources:

Oils, butter, fried food

Minerals

Minerals we only need in small amounts and help to keep us healthy

Examples are calcium for strong bones and iron for your red blood cells.

Good sources:

Iron: red meat

Calcium: dairy products

Vitamins

Vitamins we also only need in small amounts and keep us healthy.

They are named after letters.

Good sources:

Vit A: carrots, eggs

Vit C: citrus fruits

Water

Water is important for transport, cooling down and removing waste from your body.

Good sources:

Drinks, fruits and vegetables

Fibers

Fiber cannot be broken down in your body. It helps your food move through your digestive system.

Good sources:

Grains and vegetables

GROWTH & REPAIR

ENERGY

STAYING HEALTHY

PROTEINS

CARBOHYDRATES

FATS

MINERALS

WATER

FIBRE

VITAMINS

FOOD LABLES

Shows:

Quantities: amounts

Calories: energy in the food

Daily value: recommended amount of that nutrient per day

INDICATORS

Indicators show (indicate) if a certain substance is present or not

Assignment 'Zoo animal nutritionist'

You can find the assignment 'Zoo animal nutritionist' in classroom

Follow the instructions

Make sure you hand it in before the next lesson

Types of Flames

Worksheet

This lessonhalf we will fill in the worksheet of skills 6 Teclu burner part 1. 

Use pages 178 - 180 from you science book to help you.

Make sure you write in your lab journal what is asked from you in each question.

We will end with an demonstration in the lab

Reminder of the lab rules:

• Always be properly protected. This includes wearing safety glasses and lab coat plus tying back long hair.
• No open shoes and make sure legs are covered (no skirt, shorts...)
• No jewellery (watches, rings...)
• Do not eat or drink anything in the lab
• No running or fooling around --> 1 warning and you are out
• Follow the instructions given for the experiment. 
• If you are in doubt about what you should do then always ask your teacher or the lab technician for help.

Demo teclu burner in the lab

Homework

Finish assignment ‘Zoo animal nutritionist’ in google classroom

Make question 12-21 in your textbook (pages 54-61) 

NEXT WEEK:  experiment with teclu burner. Read skills 6 again!