Butterflies and frogs both undergo a process called metamorphosis as they develop from eggs to adults. Butterflies go through four stages - egg, larva, pupa, and adult. Frogs also change forms, starting as eggs then developing into tadpoles, froglets, and finally adult frogs. Both animals drastically change their appearance and abilities as they mature through metamorphosis.

1. Grade 4

2. Where do
butterflies
come from?

3. Yeah, tell
me please!

4. Unlike you and me…
butterflies look different when
they were babies!

5. Check this out!
Baby Adult

6. Amazing, right?

7. Butterflies are special
because their form change
as they grow older.
this is called
METAMORPHOSIS

8. Let’s read together…
metamorphosis
or change in form

9. a butterfly’s metamorphosis
Egg Larva
Adult Pupa

10. First…
Egg

11. Next…
Larva

12. Third…
Pupa

13. Last…
Adult

14. Finally…
a butterfly!

15. Wow.
Thanks for
telling me!

16. Let’s review…
A butterfly changes in form
Egg  Larva  Pupa 
Adult
this is called
METAMORPHOSIS

17. Well, that’s cool!
Ribbit.
What about
me?

18. Where do
frogs come
from?

19. Frogs also change in form…
check out this cool dude!

20. a frog’s metamorphosis
Eggs Tadpole
Adult Froglet

21. Frog’s metamorphosis

22. First…
Eggs

23. Egg
• A frog lays many eggs
at one time.
• The eggs are covered
with a jellylike coating.

24. Second stage…
Tadpole

25. Tadpole
• Hatched tadpoles have gills
for breathing in the water.
• They have a tail, but no
legs.

26. Third…
Froglet

27. Froglet
• As a tadpole grows, lungs
begin to form.
• Back and front legs begin
to grow. These parts allow
the adult frog to live on
land.

28. Adult Frog

29. Adult Frog
• Once the lungs form and
begin to work, the gills and
tail disappear.
• The adult frog is now
ready to live on land

30. Go for
the
gold!

31. Sources
• http://www.tooter4kids.com/Frogs/life_
cycle_of_frogs.htm
• http://ecs.lewisham.gov.uk/youthspace
/ca/Lorraine/frog_life_cycle.htm