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Happy circus : level 1

Corkwood : level 3

Fliying termites : level 3

Casheus nuts : level 3

Resonant sounds : level 3

Cramp! : level 2

The fury tongue! : level 3

Friction on snow : level 3

My first skydive : level 3

Strange cat habits! : level 2

Run,pinworms attacking! : level 2

a wholesome treasure : Level 2

Koala,the lazy bones : level 1

A world without plants : level 1

The importance of traffic lights : level 1

Roar!the good tyrannosaurus : level 1

Advantages of round-shaped containers : level 1

The brave little foxes : level 1

Friction in tug-of-war : level 3

The amazing coconut water : level 3

we're good freind : level 3

Lets travel on the plane! : level 2

Bad habits cause myopia! : level 2

I,m a poop-powered bus! : level 2

Can an egg bounce? : level 2

The short underground tribe : level 2

Conquering the highest mountain! : level 2

No more crooked teeth : level 2

Let's tour the moon : level 2

Gaint in the sea : level 2

Do you want to join me in a hot air ballon : level 2

Is this a plant?,is this a flowers?,is this a leaf?,lets find out in science adventures! : level 2

hehehe,you cannot escape my notice? : level 2

The flight expert-flies : level 2

Ships of the desert : level 2

a bird tha can't fly : level 2