Life Cycles and Biological Change

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Life Cycles and Biological Change

• 4th Grade Science

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4.4.1 Distinguish offspring from the parent.

• Lets take a look at animals and their babies
• http//members.enchantedlearning.com/subjects/anim
  als/Animalbabies.shtml

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4.4.1 Distinguish offspring from the parent.

• Lets play a game Match each animal with its
  baby
• http//www.manythings.org/wbg/animal_babies-jw.htm
  l

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4.4.2 Recognize the relationship between
reproduction and the survival of a species.

• Lets look at some Turtles in Trouble
• http//www.nationalgeographic.com/ngkids/9911/turt
  le/

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4.4.3 Select the illustration that depicts the
life cycle of a specific organism.

• The butterfly's life cycle goes through four
  stages of life, but they only look like
  butterflies in the final stage.
• Birds, frogs, snakes and insects also change as
  they grow.

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Life Cycle of a Butterfly

• 1. An adult butterfly lays an egg.
• 2. The egg hatches into a caterpillar or larva.
• 3. The caterpillar forms the chrysalis or pupa.
• 4. The chrysalis matures into a butterfly.

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4.4.3 Select the illustration that depicts the
life cycle of a specific organism.

• Lets look at the life cycle of a salmon

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Lets do a WEBQUEST about life cycles!!

• To begin, go to
• http//warrensburg.k12.mo.us/webquest/cycles/

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4.6.1 Match fossil evidence with organisms that
are alive today.

• What is a FOSSIL?
• the remains or trace of a plant or animal that
  lived in the past.

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4.6.1 Match fossil evidence with organisms that
are alive today.

• Life Has a History
• http//www.ucmp.berkeley.edu/education/exploration
  s/tours/intro/Introkto4b/tour1intro.php

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4.6.2 Identify animal and plant populations as
thriving, threatened, endangered, or extinct.

• THRIVINGalive reproducing
• THREATENEDat risk of becoming endangered
• ENDANGEREDalmost extinct
• EXTINCTno longer alive on earth

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4.6.2 Identify animal and plant populations as
thriving, threatened, endangered, or extinct.

• Lets take a look at some endangered species
• http//www.endangeredspecie.com/map.htm

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4.6.3 Infer possible causes of extinction.

• EXTINCTION the dying out of a species

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4.6.3 Infer possible causes of extinction.

• Possible causes
• an increase in the number of predator species
• a failure to compete successfully with other
  species in the same habitat
• rapid climatic or other environmental changes
• natural catastrophes which wipe out habitats
• new diseases to which the species has no immunity
  
• impact of man

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4.6.3 Infer possible causes of extinction.

• Lets find out more about extinction
• http//www.bbc.co.uk/schools/gcsebitesize/biology/
  variationandinheritance/3evolutionrev7.shtml