YR1_T2_LSN3

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

Get ready

• Only a pencil 

Everything else in your bag! 

Reminder:

• Jacket in locker
• Phone in locker
• No chewinggum
• No food

Reminder of classrules

• I am quiet during the instruction
• I raise my hand when I have a question
• I listen when someone asks a question
• I actively participate in the lesson
• I only touch my own stuff
• I am respectful

Reminder of classrules

Topic 2 Lesson 3

Plan for today

• Test T1 discussion (10min)
• Test T1 reflection (15 min)
• Explanation T2.3 digestion (30 min)
• Short break (5 min)
• Work on homework (25 min) 

Test T1 discussion (10min)

We will now look at the questions

If there is a question that I should look at, please write the number of the question on top of your first paper with pencil!

Test T1 reflection (15min)

• Grab your laptop and open the document: ''[Template] test reflection Y1''
• Complete your reflection form on Classroom 

Done? Hand it in classroom!

• Correct your homework of T2.2 with a different color

(answers are in classroom)

Topic 2.3 Digestion (30 min)

Learning goals 

• I know the steps of the digestive system
• I know which organs the food goes through and what happens in those organs with the food
• I know the three different types of teeth and what they are used for.
• I understand the difference between a carnivore, omnivore and herbivore and can recognize them by their teeth

Key words

• Ingestion
• Digestion
• Egestion
  
• Enzymes
• Carnivore
• Herbivore
• Omnivore
• Incisors
• Canines
• Molars

• Digestive system
• Stomach
• Large intestine
• Small intestine
• Rectum
• Faeces

Ingestion

• Ingestion is putting food in your mouth.
• Chewing: breaks food down into smaller pieces and mixes it with saliva. 
• Swallowing: the food goes to your esophagus, this tube leads the food to your stomach. 
• Your saliva contains enzymes that help to start the digestion of your food. 
• Enzymes are molecules that help break down your food.

Teeth

There are 3 different types of teeth that help with this process:

Incisors - front teeth that bite off pieces of food

Canines - also help bite off food, predators 

                     use them to hold their prey.

Molars - back teeth that grind our food into smaller pieces

Digestion

• Digestion is the process of breaking 

       down large molecules into smaller ones. 

• The organs that do this are called 

        your digestive system.

• Most digestion with enzymes happens in 

      the oesophagus, stomach and small intestine.

Enzymes

Amylase:  in saliva

Protease:  gastric juice

Lipase:   small intestine

Absorbtion

• After most of the digestion is done , the nutrients get absorbed.
• Most nutrients are absorbed in the  small intestine. 
  
• Water and a few final vitamins are absorbed in the large intestine. 

   

Egestion

• Egestion is the process of removing waste products (pooping)
• Anything your body cannot absorb is combined to form faeces. (scientific work for poop)
  
• This faeces is moved towards your rectum and stored there till you go to the toilet. 

rectum

liver

mouth

stomach

oesophagus

large intestine

small intestine

Short break (5min)

Homework (25min)

Make question 22-32 in your textbook (pages 66-73) 

+ Correct your homework in a different color (answers are in classroom)

Finish skills 6: teclu burner part 1 in your labjournal (for tomorrow!)