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Frog's life

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This is presentation for school assignment on creating a power point, using slide share, and crating a lesson tied to the California Department of Education Standards

This is presentation for school assignment on creating a power point, using slide share, and crating a lesson tied to the California Department of Education Standards

Published in: Education, Lifestyle, Technology

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  • 1. Frogs Change happens
  • 2. FROGS ARE AMPHIBIANS
    • AMPHIBIAN: Living both in water and on land
      • They begin life in the water as an egg, grow into tadpoles that breathe with gills and then grow into adults that breathe air (from Greek amphibion : amphi ‘both’ + bios ‘life’ )
      • Some types of amphibians:
        • Frogs and Toads
        • Salamanders and Newts
  • 3. It’s a Frog’s Life
    • Frogs begin life as an egg
    • Female frogs can lay as many as 20,000 eggs at one time
    • The eggs have to be fertilized by a male frog
    • Frog eggs have a protective jelly-like coating that tastes bad to predators
    • The egg masses are called egg sacks or frogspawn
  • 4. Life Begins
    • It takes about 6 to 21 days for a frog egg to hatch
    • The tadpoles wiggle inside the egg until they can break free
    • Tadpoles emerge from the egg, eating the remains of their egg
    • Tadpoles have a mouth, poorly formed gills for breathing, and a tail
    • Tadpoles eat algae and camouflage is their only protection. They hide in plants
  • 5. Metamorphosis
    • Metamorphosis is the change in the form or structure after birth or hatching
    • At 6 to 9 weeks, the tadpole has grown tiny legs and arms and can breath air as its lungs develop
    • A tadpole grows legs first and then arms. Skin grows over their gills
    • They begin to eat insects and plants
    • Watch this video of the process so far: from egg to froglet
  • 6. Froglet
    • At 12 weeks, the tadpole’s body, legs, and arms are bigger and its tail is smaller. The tadpole has become a ‘froglet’
    • Froglets can live outside of the water, they breath air and eat insects
    • Froglets reabsorb their tail to help them grow
  • 7. Frog
    • Once the tail is fully absorbed, the froglet has become a frog
    • Frogs eat insects and worms
    • Frogs stay close to the water so the cycle can begin again
  • 8. Fun Facts
    • The largest frog in the world, Africa’s Goliath Frog: http://thexodirectory.com/2007/12/goliath-frog-worlds-largest-frog/
      • The smallest frog in the world: you decide.
        • The Bornean Micro Frog: http ://news.nationalgeographic.com/news/2010/08/photogalleries/ 100825 -new-species-pea-size-frog-science-pictures /
        • Monte Iberia Eleuth: http://www.wereyouwondering.com/what-is-the-smallest-frog-in-the-world /
        • Stumpffia pygmaea:
          • http ://amphibiaweb.org/cgi-bin/amphib_query?where-scientific_name=Stumpffia+ pygmaea
    • Want to know more? Visit: http://www.amnh.org/exhibitions/frogs/frogfacts/
  • 9. Resources
    • http://allaboutfrogs.org/weird/general/cycle.html Retrieved 8/6/2011
    • http ://bogglesworldesl.com/ froglifecycle.htm Retrieved 8/6/2011
    • http://www.learner.org/jnorth/search/FrogNotes3. html Retrieved 8/6/2011
    • http://www.californiaherps.com/frogs/ frogs.html Retrieved 8/6/2011
    • http://video.nationalgeographic.com/video/player/kids/animals-pets-kids/amphibians-kids/frog-tadpole- kids.html Retrieved 8/6/2011
  • 10. California Department of Education Content Standard; Science Grade Two
    • Life Sciences
    • 2. Plants and animals have predictable life cycles. As a basis for understanding this concept:
      • a. Students know that organisms reproduce offspring of their own kind and that the offspring resemble their parents and one another.
      • b. Students know the sequential stages of life cycles are different for different animals, such as butterflies, frogs, and mice.
  • 11. Expanding the Lesson
    • A Web Quest: http://www.ourclassweb.com/webquests_frogs_introduction.htm
    • Ribbit! Ribbit! A thematic unit on frogs by Christine Gorman:
      • http://www.everythingesl.net/lessons/Christine_Gorman.php