Stages of growth

Know about the stages of human growth.

Understand reasons for different gestation periods.

Describe some problems in human growth.

Starter: How do a single human sperm and egg produce a mature baby after 9 months?

Put these growth stages in order

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Adolescent

InfantOld man

AdultChild

Childbirth

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Bear cubBeaver kitCat kittenCow calfDog puppyDuck ducklingGoose goslingHen pulletHorse foalKangaroo joeyPig pigletPigeon squabRat kittenShark cubSwan cygnet

Name the offspring of these animals

Gestation periods

Animal Average gestation period (in days)

Dog 61

Giraffe 425

Goat 151

Chicken 21

Golden eagle 44

Human 265

Asian elephant 645

Mouse 19

Finback whale 365

Sea lion 365

Squirrel 44

Skunk 31

Rhinoceros 480

Work to do

• Is there a correlation between type of animal and length of gestation period?

• How does this explain why some animals have longer gestation periods?

• Do animals with shorter gestation periods tend to have more or less offspring?

Work to do

• Read the section in the text book (page 35) on growth of a baby.

• Answer question 15.

Stages of growth

Know about the stages of human growth.

Understand reasons for different gestation periods.

Describe some problems in human growth.

Plenary: Answers to worksheet on growth curves.