How do baby animals grow to be adults?. Why do animals shed their skin?
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
Ch. 2 Lesson 2
How do animals grow & change?
Birth born or hatch
Growth get biggerDevelopment change into adults
Reproduction produce young
Death lives come to an end
Life Cycle Stages of Animals
Egg Larva Pupa Adult
Life cycle of insectsLife cycle of insects (monarch butterfly) (monarch butterfly)
•covered in hard coating (chrysalis)
•caterpillar
Butterfly life cycle activities
egg
larvapupa
adult
4. adult
3. growing tadpole
2. tadpole (larva)
1. egg
Frog Life Cycle
mammal life cycleHave less changes in their life cycle than insects or amphibiansDevelop inside mom’s bodyBabies drink mom’s milk
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
Birth born or hatch
Growth get biggerDevelopment change into adults
Reproduction produce young
Death lives come to an end
Life Cycle Stages of Animals
What is the purpose of the pupa?
• To protect the butterfly as it changes into an adult.
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.
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.
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.
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.
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).