In deze les zitten 12 slides, met tekstslides en 1 video.
Lesduur is: 45 min
Onderdelen in deze les
Welcome!
Today:
Discussing homework
Discussing history of life on earth (page 135)
Making exercises
Slide 1 - Tekstslide
What are we going to learn today?
Today we'll be learning:
How fossils originate.
What the history of life on earth is.
How animals are related when they have a common ancestor.
Slide 2 - Tekstslide
Fossils
Slide 3 - Tekstslide
Fossils
Fossils are petrified remains of an organism, pressed in a sediment. Fossils are extremely important for researching the history of life on earth.
Slide 4 - Tekstslide
Origin fossils
Slide 5 - Tekstslide
Slide 6 - Video
Geological timescale
Slide 7 - Tekstslide
Mass extinctions
Slide 8 - Tekstslide
History of animals
Almost all species that are alive now weren't so millions of years ago. However, there where ancestors where those species originate from. A lot of species share a common ancestor that was alive back then.
Slide 9 - Tekstslide
Kinship
Proof for this is that a lot of animals are build up the same. They ahve the same organs and structure. We even share some organs that one animals doesn't need anymore. These organs are called rudimentary organs.
Slide 10 - Tekstslide
Rudimentary organs
Slide 11 - Tekstslide
Time to work!
The homework for next lesson are the exercises of paragraph 2.5, starting on page 139. You also need to make the summary and plusexercise. You can start with them now.
Lesduur is: 45 min
