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"Our Natural World - REPTILES" 

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Our Natural World
REPTILES

Size: 14,983 KB

Type: Microsoft ® Office PowerPoint

# of Slides:  32

Appropriate for grades:  3 - 12 

Description:  

Welcome to the world of reptiles!

This presentation begins with a reminder that all animals can be grouped according to those with backbones – Vertebrates and those without – Invertebrates. Photographs will demonstrate the general characteristics of reptiles and the fact that reptiles are difficult to define since they do not have an isolated evolutionary lineage.

Students will learn that the typical characteristics of reptiles include:  membership in the Repitilia class; are cold-blooded (ectothermic);  need to bask in the sun in order to keep their body temperatures optimum for digestion and warmth; are covered with scales or scutes; have spinal columns and a strong skeletal system; have well-developed brains; and have lungs and breathe air.

A turtle’s shell is closely examined as well as its egg laying habits. Students will learn that many reptiles have temperature-dependent sex determination and that eggs are affected by the temperature during a critical time of embryonic development.

Some statistics from the Reptile-Database demonstrate that new species are being continuously discovered.

Students will further learn that the shedding of skin by snakes is called “ecdysis”.

The presentation concludes with some fun reptile facts.

New terms:  vertebrates, invertebrates, ectothermic, scales, scutes, ecdysis, carapace, oviparous.

Created by:  

Tiiu Roiser BAA, BEd & 
Kevin Chorowiec OCT, BAS, BEd

 

 


 

 

Our Natural World - Reptiles 

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