Frogs Change happens
FROGS ARE AMPHIBIANS <ul><li>AMPHIBIAN: Living both in water and on land  </li></ul><ul><ul><li>They begin life in the wat...
It’s a Frog’s Life <ul><li>Frogs begin life as an egg  </li></ul><ul><li>Female frogs can lay as many as 20,000 eggs at on...
Life Begins <ul><li>It takes about 6 to 21 days for a frog egg to hatch </li></ul><ul><li>The tadpoles wiggle inside the e...
Metamorphosis  <ul><li>Metamorphosis is the change in the form or structure after birth or hatching </li></ul><ul><li>At 6...
Froglet <ul><li>At 12 weeks, the tadpole’s body, legs, and arms are bigger and its tail is smaller.  The tadpole has becom...
Frog <ul><li>Once the tail is fully absorbed, the froglet has become a frog  </li></ul><ul><li>Frogs eat insects and worms...
Fun Facts <ul><li>The largest frog in the world, Africa’s Goliath Frog:  http://thexodirectory.com/2007/12/goliath-frog-wo...
Resources <ul><li>http://allaboutfrogs.org/weird/general/cycle.html  Retrieved 8/6/2011 </li></ul><ul><li>http ://bogglesw...
California Department of Education Content Standard; Science  Grade Two <ul><li>Life Sciences </li></ul><ul><li>2. Plants ...
Expanding the Lesson <ul><li>A Web Quest:  http://www.ourclassweb.com/webquests_frogs_introduction.htm </li></ul><ul><li>R...
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Frog's life

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Frog's life

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

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