3rd Grade Ch. 2 Lesson 2 How do Animals Grow & Change
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Transcript of 3rd Grade Ch. 2 Lesson 2 How do Animals Grow & Change
![Page 1: 3rd Grade Ch. 2 Lesson 2 How do Animals Grow & Change](https://reader033.fdocuments.us/reader033/viewer/2022060108/55507c93b4c90524138b53db/html5/thumbnails/1.jpg)
Ch. 2 Lesson 2
How do animals grow & change?
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Birth born or hatch
Growth get biggerDevelopment change into adults
Reproduction produce young
Death lives come to an end
Life Cycle Stages of Animals
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Egg Larva Pupa Adult
Life cycle of insectsLife cycle of insects (monarch butterfly) (monarch butterfly)
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•covered in hard coating (chrysalis)
•caterpillar
Butterfly life cycle activities
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egg
larvapupa
adult
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4. adult
3. growing tadpole
2. tadpole (larva)
1. egg
Frog Life Cycle
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mammal life cycleHave less changes in their life cycle than insects or amphibiansDevelop inside mom’s bodyBabies drink mom’s milk
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Draw, color and label a picture of each of the following life cycles:
1. Insect (butterfly) life cycle
2.Frog life cycle
3.Mammal life cycle
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Birth born or hatch
Growth get biggerDevelopment change into adults
Reproduction produce young
Death lives come to an end
Life Cycle Stages of Animals
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What is the purpose of the pupa?
• To protect the butterfly as it changes into an adult.
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List the sequence of steps in a butterfly’s life cycle. Use the signal words first, next, then, and finally.
• First, an egg is laid.• Next, a larva, or caterpillar, hatches. • Then, the larva spins a covering around
itself and becomes a pupa. • Next, a butterfly crawls out. • Finally, adult butterflies mate and lay
eggs.
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Before a frog can live on land, how must its body change?
• A frog must grow lungs so that it can breathe air and powerful legs to propel itself forward.
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How is a mammal’s life cycle different from a frog’s or butterfly’s
life cycle?• A mammal develops inside its
mother, is born looking like its parents, and does not change a lot in its life cycle.
• A frog or butterfly develops in an egg that the mother lays, hatches, and changes a lot in its life cycle.
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Think about how mammals care for their young.
Describe why this kind of care might be helpful for most mammals.
• Young mammals are fed and protected until they learn how to live on their own and grow large enough to protect themselves.
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Name and circle the correct
phase in the butterfly’s life cycle.
It is also known as a caterpillar.
It’s body changes a lot, growing wings and
jointed legs.
It’s life cycle begins.
The adult butterfly
comes after this stage.
It is able to lay eggs.
It is covered in a hard coating (chrysalis).