ALL ABOUT CROCODILES MIMI HENDERSON

Content Area: Science/Life Cycles Grade Level: 3 Summary: The purpose of this power point is to have the students understand that crocodiles are one of the oldest reptiles on earth and they have four stages to their life cycle. Learning Objective: Identify Crocodile life cycle stages and give specific life characteristics about the crocodile and be able to answer the questions within the power point with 100 percent accuracy. Content Standard: GLE 0307 .4.1 Indentify the different life stages through which plants and animals pass. SPI 0307 .4.1 Select an illustration that shows how an organism changes as it develops. Accomplishment: Crocodiles have been around for millions of years and have one of the strongest bites in the reptile family, with a bite of more than five thousand pounds of pressure. The survival of this reptile is amazing.

DIRECTIONS TO CROC-FORMATION! http://kids.nationalgeographic.com/kids/animals/creaturefeature/nile-crocodile/?vgnextfmt=printable To begin the click on the right arrow in the facts and photos box 1 of 17 you can also right click the arrow in the box that says 4 of 4 to view photos. Once done click on the tab video and sound for the narrative Click the tab that says map to view Third you will click on the tab E card to send to a friend And finally you can click on the tab that says print of creature, Only if your teacher says that it is ok. Please go to the website below for crocodile information.

Facts The first crocodiles appeared on earth, around 200 million years ago. The average age of crocodiles is 50 - 60 years but some have been known to live for over 80 years. Crocs have 4 life cycle stages; eggs up to 12 weeks, they are called hatchlings until 2 years of age then they become a juvenile until the age of 5 years and then considered an adult Did you know that crocodiles lay eggs? The mother crocodile lays her eggs on the ground and bury them to protect them from some animals that like to eat them. The mother crocodile and sometimes the father crocodile stay close to the nest, protecting it. When the mother hears the sounds of baby crocodiles, she will soon dig up the eggs of the sand to help them hatch. Then mama croc will take her crocodile hatchlings into the water, where they will eat mostly insects

Crocodiles live in tropical and subtropical Africa, India, Southeast Asia, America and Australia in wet environments - rivers, lakes, coastal areas and wetlands. There are freshwater crocodiles and saltwater crocodiles. Freshwater crocodiles are smaller and their teeth have identical sizes. Meanwhile, the saltwater crocodiles are bigger, have teeth of different sizes and are more dangerous to humans. In water crocodiles remain hidden underwater, the only thing you'll see are the eyes and nostrils. So they can breathe more easily and catch prey that are approaching the water. They swim very well with the help of their long and powerful tail. On the ground the crocodiles like to sunbathe with their mouths open and also make their nests. Crocodiles eat small mammals, rats, snakes, antelopes, zebras, fish, turtles, birds, pets. They grab their prey and carry them to the bottom of the water to drown. Then come to the surface of the water to eat. Crocodiles do not use their teeth to chew food the crocodile's teeth are just used to grab food with some nasty crocodile bite. They usually swallow the food whole or in big chunks.

Question! When did the first Crocodile appear on earth? 20 million years ago 5 million years ago 200 million years ago 1 thousand years ago

Wow you crock! Way to go, nice job

Question! What do Crocodile’s eat? insects Zebras Fish Buffalo All of the above

Directions for word search game Click on link below http://www.apples4theteacher.com/science.html To get to the word search game Click on science tab Click on animal classification Click on reptiles word search Once game has loaded read and follow directions and click to play the word search game.

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You sure do know your Crocodile facts. Great Job! Wow! You sure do know your Crocodile facts. Great Job!

PLEASE TRY AGAIN YOU CAN DO IT!

Summary In this lesson the you will have learned that the Crocodile is the largest and longest living reptile on earth. The Crocodile first appeared on earth around 200 million years ago and has an average life expectancy around 80 years or older. The Crocodile is classified in phylum Chordata, subphylum vertebrata class Reptilia, order Crocodilia family Crocodilidae. Crocs have 4 stages in their life cycle eggs, hatchlings, juveniles, and adult. Crocs lay eggs and students will learn that crocs are carnivores….they eat meat. You should have watched the video at http://kids.nationalgeographic.com/kids/animals/creaturefeature/nile-crocodile/?vgnextfmt=printable to learn about the life cycle of Nile Crocodile . You will be given a 1/2 sheet of paper and asked the question “The most Important things I have learned today are?” You will also engage in an interactive crossword puzzle game at http://www.apples4theteacher.com/science.html

Works cited Pictures for slides 3, 4 and 6: from 2013 clip art http://office.microsoft.com/ens/images/results.aspx?qu=crocodiles&ex=2 http://kids.nationalgeographic.com/kids/animals/creaturefeature/nile-crocodile/?vgnextfmt=printable http://www.apples4theteacher.com/science.html