Grade 4

Where do butterflies come from?

Yeah, tell me

please!

Unlike you and me…

butterflies look different when they were babies!

Check this out!

Baby Adult

Amazing, right?

Butterflies are special because their form change

as they grow older.

this is called METAMORPHOSIS

Let’s read together…

metamorphosis

or change in form

a butterfly’s metamorphosis

Egg Larva

PupaAdult

Egg

First…

Larva

Next…

Pupa

Third…

Adult

Last…

Finally…

a butterfly!

Wow.Thanks for telling me!

Let’s review…

A butterfly changes in form

Egg Larva Pupa Adult

this is called METAMORPHOSIS

Well, that’s cool!

Ribbit. What

about me?

Where do frogs come from?

Frogs also change in form…

check out this cool dude!

a frog’s metamorphosis

Eggs Tadpole

FrogletAdult

Frog’s metamorphosis

First…

Eggs

Egg

•A frog lays many eggs at one time.

•The eggs are covered with a jellylike coating.

Second stage…

Tadpole

Tadpole

•Hatched tadpoles have gills for breathing in the water.

•They have a tail, but no legs.

Third…

Froglet

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.

Adult Frog

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

Go for the

gold!

Sources

• http://www.tooter4kids.com/Frogs/life_cycle_of_frogs.htm

• http://ecs.lewisham.gov.uk/youthspace/ca/Lorraine/frog_life_cycle.htm