Natka picked up her net from where she had put it on her desk, and narrowed her eyes, looking at all the chocolate leaping around the classroom. her mouth watered; she loved chocolate.

But this isn't the time to think about food, she thought, swinging her net in the hope of catching one of the frogs as it flew by. She failed miserably, almost falling off her desk in the process.

All right, I have to concentrate. Come on, focus, Natka! she told herself, gripping the net handle more frimly in her hands.

Oh, and there came another one, gloriously dark brown in colour, flying across the classroom as if it had wings instead of a magical charm which allowed it to fight gravity. Determination surging through her, the second year threw out her arm just in time...

... and grinned at the sight of the wriggling chocolate frog in her net.