Animals including Humans

1
Animals including Humans

• Year 5
• Lesson 3
• LI Explore the variability of gestation periods
  of different mammals

2
Input
How does a mammal develop inside their mother?
3
Gestation

• The length of time a mammal spends in its
  mothers womb is known as the gestation period.
  This gestation period can vary enormously from
  species to species.
• Why do you think this is?

4
Gestation Periods
Create a bar graph showing the gestation periods
of different animals.
What do you notice?
Mammal Gestation period in days
Cat 63
Chimpanzee 240
Lion 108
Human 266
Rabbit 31
Squirrel 44
African elephant 650
Whale 360
Horse 336
Polar bear 241
Giraffe 435
Mouse 21
Rhinoceros 480
Hamster 16
Dog 61
Camel 400
5
Plenary
What does dependency mean? Why do different
animals have different dependencies?