Science Grade 2 Ginette Boudreau Source for image:

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Presentation transcript:

Science Grade 2 Ginette Boudreau Source for image:

Students will learn about:  Amphibians  Metamorphosis and development of frogs  A frog’s life cycle  Characteristics of frogs and tadpoles  The needs of frogs and tadpoles

Task: 1. Find a partner and tell each other what you already know about frogs. 2. Continue reading the powerpoint.

Frogs…  have backbones  live part of their lives in water and the other part on land  are cold blooded  return to the water to lay eggs image: answersingenesis.org,Retrieved January,

 It means change in appearance  It means transformation  Frogs go through an important physical change called metamorphosis

Adult frog Frogs mate Lay eggsTadpoles

In Spring  Males sing to attract a female in the spring  They often mate in the water  Females lay many eggs in the water  Males fertilize the eggs once they are laid Mating image:: Retrieved January 18, 2011 from the-reaction.blogspot.com/2007_03_11_archive.htm

 Eggs are covered in a jelly substance  They are found in water  Hatch in 6 to 21 days  They become Tadpoles Startosta,P. (photographe of egg). (1991). La grenouille, Belgique,Éditions Milan

 Come out of the egg after 21 days  Live underwater for 90 days  Eat aquatic plants  Breathe with their gills Startosta,P. (photographe of tadpole). (1991). La grenouille, Belgique,Éditions Milan

During 90 days, the tadpoles will have a very interesting transformation called … Guess what is the answer? Click and reveal

Day 1 Week 6 Week 10 Startosta,P. (photographe of life cycle). (1991). La grenouille, Belgique,Éditions Milan

Task: In your art journal, draw what you think the tadpole will look like at week 14.

 Click on the link to watch a video of the frog’s life cycle  MQf4 MQf4

 Live in water and on land  Eat insects  Have 4 legs  Breathe with lungs  Do not have a tail  Swim and leap Source for image:

 (Did you know)  o=portal.nbed.nb.ca,SSL+You%20and%20Your%20 World%20Grades%20K%20-2%20English.pdf (NBED Curriculum) o=portal.nbed.nb.ca,SSL+You%20and%20Your%20 World%20Grades%20K%20-2%20English.pdf  (video-how tadpoles change) Retrieved on January 18,  &feature=related (animal life cycles) &feature=related

 imaux&scat=grenouille&debut=60&nba=6&s uite=yes (all clipart in this presentation) imaux&scat=grenouille&debut=60&nba=6&s uite=yes  Pictures in the presentation (see below picture for references)