In this Grade 3 lesson from Science: A Closer Look, students explore animal life cycles and learn how different animals grow and change over time. Key vocabulary includes metamorphosis, egg, larva, and pupa, with a focus on how amphibians and insects transform through distinct stages compared to reptiles, fish, and birds that hatch resembling their parents. Students observe real caterpillar changes, sequence the butterfly life cycle, and compare it to the sea turtle life cycle to understand that not all animals develop the same way.
Section 1
Animals Transform Through Unique Life Cycles
Animals develop through distinct life cycles. Some are born resembling parents, while others undergo significant changes. All animals go through birth, growth, reproduction, and eventually death.
Section 2
Insects and Amphibians Experience Metamorphosis
Some animals like butterflies and frogs completely change their appearance through metamorphosis. They develop from eggs to larvae (caterpillars or tadpoles) to pupae, finally becoming adults.
Section 3
Reptiles, Fish, and Birds Hatch Looking Like Adults
These animals develop inside eggs until they hatch looking similar to their parents. While reptiles and fish typically fend for themselves immediately, birds receive parental care until they can fly.
Section 4
Mammals Care for Their Live-Born Young
Unlike egg-laying animals, mammals give birth to live offspring that resemble adults. Parents provide food and protection until young mammals grow stronger and learn survival skills needed for independence.
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Section 1
Animals Transform Through Unique Life Cycles
Animals develop through distinct life cycles. Some are born resembling parents, while others undergo significant changes. All animals go through birth, growth, reproduction, and eventually death.
Section 2
Insects and Amphibians Experience Metamorphosis
Some animals like butterflies and frogs completely change their appearance through metamorphosis. They develop from eggs to larvae (caterpillars or tadpoles) to pupae, finally becoming adults.
Section 3
Reptiles, Fish, and Birds Hatch Looking Like Adults
These animals develop inside eggs until they hatch looking similar to their parents. While reptiles and fish typically fend for themselves immediately, birds receive parental care until they can fly.
Section 4
Mammals Care for Their Live-Born Young
Unlike egg-laying animals, mammals give birth to live offspring that resemble adults. Parents provide food and protection until young mammals grow stronger and learn survival skills needed for independence.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter