ScienceGrade 2nd· Why Dont Humans Lay Eggs
Why Dont Humans Lay Eggs
Why Dont Humans Lay Eggs
Learning Objective
Students will learn about why humans dont lay eggs.
Words to Know
- Mammal
- Animal with hair, makes milk, gives birth to live babies!
- Humans and dogs are mammals.
- Placenta
- Organ that sends food from mom to baby inside the body!
- Like a built-in lunchbox.
- Monotreme
- A mammal that lays eggs — platypus and echidna only!
- Platypuses are monotremes.
- Marsupial
- Mammal with tiny babies that grow in a pouch!
- Kangaroos are marsupials.
Check What You Learned
Quick Quiz
1 / 3What does “Mammal” mean?
Lesson Info
Grade 2nd
2026-07-20
Why Dont Humans Lay Eggs
Standards Alignment
- 3-LS4-2
Use evidence to construct an explanation for how the variations in characteristics among individuals of the same species may provide advantages in surviving
- 3-LS4-3
Construct an argument with evidence that in a particular habitat some organisms can survive well, some survive less well, and some cannot survive at all
Keywords
2nd grade sciencescience for kidsdonthumanslayeggsmammalplacentamonotrememarsupial3-LS4-23-LS4-3
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