What is LessonUp
Search
Channels
Log in
Register
‹
Return to search
U2 B5 2HVTTO
B5 Food spoilage
Take off your jacket
Put your
things
on your
desk
Book, notebook, pencil case
Bag on the
floor
Read pages 125-127
timer
4:00
Lessongoals
You can describe ways to prevent food spoilage
1 / 17
next
Slide 1:
Slide
Biologie
Middelbare school
havo, vwo
Leerjaar 2
This lesson contains
17 slides
, with
interactive quizzes
and
text slides
.
Lesson duration is:
45 min
Start lesson
Save
Share
Print lesson
Items in this lesson
B5 Food spoilage
Take off your jacket
Put your
things
on your
desk
Book, notebook, pencil case
Bag on the
floor
Read pages 125-127
timer
4:00
Lessongoals
You can describe ways to prevent food spoilage
Slide 1 - Slide
Wheel of homework
Go to Lessonup.app and use this code
Reward
Penalty
Slide 2 - Slide
Clara is an adult woman. She calculates her BMI.
How should she do that?
A
B
M
I
=
w
e
i
g
h
t
2
l
e
n
g
t
h
B
B
M
I
=
l
e
n
g
h
t
2
w
e
i
g
h
t
C
B
M
I
=
w
e
i
g
h
t
l
e
n
g
t
h
2
D
B
M
I
=
l
e
n
g
t
h
w
e
i
g
h
t
2
Slide 3 - Quiz
When she calculates her BMI it is 23,5. What does this mean for her?
A
Her weight is too low
B
Her weight is healthy
C
Her weight is too high
D
Her weight is way too high
Slide 4 - Quiz
A certain foodstuff contains 20 kJ of energy. How much J is that?
A
2.000 J
B
20.000 J
C
0,002 J
D
0,02 J
Slide 5 - Quiz
Meyra en Miray are twins. The amount of energy they need is not the same.
What is the most logical reason for this difference?
A
Their sex is different
B
Their body length is different
C
Their age is different
D
Their physical activity is different
Slide 6 - Quiz
Why does food spoil?
Slide 7 - Open question
What happens when you eat/drink spoiled food?
Slide 8 - Open question
Food spoilage
Bacteria and fungi eat our food = food spoilage
They need:
Food
Moisture
Right temperature
Right environment
Preserving food is done by changing these things. making it impossible/hard to live on the food for bacteria/fungi
Slide 9 - Slide
Preserving - Water
Drying
Bacteria/fungi dry out
Slide 10 - Slide
Preserving - Cooling
Fridge > 3 - 4 °C
Bacteria/fungi are slowed
Deep freeze > -20 °C
Bacteria/fungi are frozen
Slide 11 - Slide
Preserving - heating
Pasteurization > 72 °C
Most bacteria/fungi are killed
Sterilization >130 - 140 °C
Bacteria/fungi are killed
Slide 12 - Slide
Preserving - Additives
Preservatives
Sugar Acid
Salt Sulphite
Vinegar
Additives
Colourings Aromas
Flavourings
Slide 13 - Slide
Preserving - other ways
Irradiation
Bacteria/fungi are killed with radioactive rays
Inert packing
Adding a mixture of gases to the packaging helps the food stay fresh longer
Vacuum packing
After pasteurization/sterilization/preservatives/inert packing
Bacteria/fungi are unable to reach the food
Slide 14 - Slide
What you should do:
Read pages 125-127
Do asgmt 1-8, 4c pgs. 128-131
Done with the above?
Work on the next chapter(s)
Learn for the test
Make other homework
Read a book
Zs
= Working in Silence
No
asking questions
Silent,
don't disturb anyone
Stay at your
desk
timer
6:00
Slide 15 - Slide
What you should do:
Read pages 125-127
Do asgmt 1-8, 4c pgs. 128-131
Done with the above?
Work on the next chapter(s)
Learn for the test
Make other homework
Read a book
Zw
= Working with whispering
Teacher is available for questions
Only
whisper with the student next to you
Stay at your
desk
Slide 16 - Slide
Tidy Duty
Today these people are on tidy duty
Desks: empty and straight
Chairs: underneath the desks
Floor: no rubbish
Slide 17 - Slide
More lessons like this
2.5 Food spoilage
December 2022
- Lesson with
15 slides
Biologie
Middelbare school
havo, vwo
Leerjaar 2
U3 B5+6 HV
September 2022
- Lesson with
25 slides
Biologie
Middelbare school
havo, vwo
Leerjaar 1
Thema 2.5
January 2023
- Lesson with
12 slides
Biologie
Middelbare school
vmbo b
Leerjaar 2
U3 B6 HV
September 2022
- Lesson with
21 slides
Biologie
Middelbare school
havo, vwo
Leerjaar 1
7.1 Eat healthy (part 2)
December 2022
- Lesson with
18 slides
Biologie
Middelbare school
havo, vwo
Leerjaar 2
U3 B5 HV
September 2022
- Lesson with
17 slides
Biologie
Middelbare school
havo, vwo
Leerjaar 1
U3 B3 HV
February 2024
- Lesson with
28 slides
Biologie
Middelbare school
havo, vwo
Leerjaar 1
U3 B3 1HVTTO
January 2022
- Lesson with
29 slides
Biologie
Middelbare school
havo, vwo
Leerjaar 1