ClassX Video Lessons Youtube Channel TutoringHour The Life Cycle of a Frog | Four Stages of Development | How a Tadpole Becomes a Frog
Oh, hello there! Meet Mr. Rivet Croaks-a-Lot and his wife, Mrs. Hoppy Croaks-a-Lot. They are friendly frogs who love to share their story. Let’s join Anna as she learns all about frogs!
Frogs are special creatures called amphibians. This means they can live both on land and in water. Isn’t that cool? They are like little superheroes of nature!
The life of a frog starts with eggs. These eggs are laid in water and are called frog spawn. They look like tiny black dots covered in jelly. Can you imagine hundreds of little eggs all together?
When the eggs hatch, out come the tadpoles! Tadpoles look like tiny fish with tails. They swim around in the water and eat algae and plants. At this stage, they have gills to breathe underwater.
After about two weeks, the tadpoles start to change. They grow back legs first, and then front legs. Their tails get longer, and they begin to look a bit different. This is an exciting time for our little tadpole friends!
Next, the tadpole becomes a froglet. It looks more like a frog now but still has a little tail. The froglet can jump out of the water and breathe with its new lungs. It’s almost ready to live on land!
Finally, the froglet loses its tail and becomes an adult frog. With its shiny green coat, the adult frog is ready to explore both land and water. When it’s time, the female frog will lay eggs, and the cycle starts all over again!
Today, we learned about the four stages in the life cycle of a frog: the egg, the tadpole, the froglet, and the adult frog. Isn’t nature amazing?
Anna had a great time learning about frogs with Mr. and Mrs. Croaks-a-Lot. Now it’s time to say goodbye. Remember, if you want to learn more, you can always explore and discover new things about nature!
Frog Life Cycle Craft: Gather some colored paper, scissors, glue, and markers. Create a simple craft showing the life cycle of a frog. Cut out shapes for each stage: eggs, tadpole, froglet, and adult frog. Arrange them in order and glue them onto a piece of paper. Use markers to add details like eyes and legs. Display your artwork at home and explain the life cycle to your family!
Frog Observation Walk: Take a walk with an adult to a nearby pond or park where frogs might live. Bring a notebook and pencil. Look for signs of frogs, such as frog spawn, tadpoles, or adult frogs. Draw what you see and write down any interesting observations. How many stages of the frog life cycle can you spot?
Frog Life Cycle Storytime: Imagine you are a tadpole growing into a frog. Write a short story or draw a comic strip about your adventures as you go through each stage of the life cycle. What challenges do you face? What exciting things do you discover? Share your story with your classmates or family.
Sure! Here’s a sanitized version of the transcript:
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[Music] The life cycle of a frog [Music]
Oh gosh! Hello, you scared me! Who are you?
I’m Rivet Croaks-a-Lot, and the pretty lady there is Hoppy Croaks-a-Lot, my wife.
Hello, Mr. and Mrs. Croaks-a-Lot! I’m Anna. Nice to meet you both! I always wanted to learn about frogs. Tell me about yourselves!
Oh, I’d love to do that! How about I show you around, Anna?
Oh, that’d be even better, Mr. Croaks-a-Lot! [Music]
To begin with, we frogs are amphibians.
What does that mean?
Amphibians! It means that we can live on both land and water. You see, we are special, aren’t we, my dear?
Of course you are! And oh, so lucky! I love the water! [Music]
Do you see the frog spawn here?
Spawn? Where?
Those are little babies!
Babies? But why don’t they look like you?
I look like Mama, but the spawn—
All right, all right, no worries! Let me explain the life cycle of a frog first.
What’s a life cycle?
A life cycle is the series of changes an organism goes through in its life.
Oh, really?
We frogs go through four important stages. The first is the egg stage—our babies you just saw. The female frog lays hundreds of eggs in the water. These eggs are clumped together and are called frog spawn.
Oh, I see!
The eggs begin as small black dots covered in a jelly-like substance. After some time, each dot develops a tail and begins to look like a comma, just like those eggs you see there. The tiny tadpole hatches out.
Is that a tadpole? How can it be a baby frog? It looks like a baby fish!
Yes, it does! This is the second stage. The tadpole doesn’t move around much.
What does it eat then?
It absorbs the nutrients from the yolk. Once the yolk disappears, the tadpole begins to look around for food. The tadpole swims in the water just like a fish. It has gills and a tail, just like the fish. Since the tadpole can’t come on land, it eats the algae and plant material it finds around.
In the next 14 days or so, it transforms completely. It grows hind or back legs first, and its tail grows longer. After a few days, the front legs also pop out, but it still looks like a fish. The transformation is not complete yet, Anna. The tail shrinks, the skin covers the gills, the tadpole develops lungs and eardrums, and soon the body takes shape, and the tadpole becomes—
This is the third stage, where the froglet is all set to begin its life on land. The froglet often needs to jump out of the water to breathe with its lungs.
Look at that little fella leaping out of the water!
Aha! At last, it looks like a frog, but it has a tail!
Yes, the tiny froglet emerges out of the water with a stump of a tail. The gills and tail disappear completely. The adult frog, with its green coat, is ready to begin its journey. When it’s time, the female frog goes back to the pond to lay its eggs, and the process begins.
Now I get it! So, Anna, what have you learned today about the four stages in the life cycle of a frog?
What may they be?
The egg, the tadpole, the froglet, and the adult frog!
Wonderful, Anna! Thank you so much, Mr. Croaks-a-Lot! I need to get back home.
Bye-bye, Mr. Croaks-a-Lot!
Bye-bye, Anna! [Music]
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