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Frogs, toads and salamanders are amphibians. Snakes, lizards, turtles and crocodiles are reptiles.

Reptiles have dry skin covered in scales. Scaly skin helps stop their bodies from drying out.

Amphibians have soft, wet skin. They can even breathe through their skin!

A frog starts life as a tadpole in the water. A tadpole has a tail and no legs. It slowly grows legs, loses its tail and turns into a frog.

Experiment: Wet skin, scaly skin

1. Make both sponges wet with the same amount of water.
2. Wrap one sponge in cling film. This is the 'scaly skin'. Leave the other sponge bare: this is the 'wet frog skin'.
3. Put both on a plate in a warm place in the classroom.
4. Guess: which one will dry out first?
5. Feel both sponges after lunch or at the end of the day. Which one is still wet?

Sponge	Wet or dry at the end?
Bare sponge (frog skin)	Which one will dry first?
Wrapped sponge (scaly skin)	Which one will dry first?

Questions

1. Draw the life of a frog: egg, tadpole, frog.

   🍎

2. Does a snake have scales or wet skin?

   scales / wet skin

3. Why does a lizard sit in the sun?

Sources for every fact on this sheet: echoesof.science/school/reptiles-amphibians/sources/

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