Material: A blown egg; cardboard pattern of frog like Fig. 1; a sheet of green paper, 5 in. x 6 in. (medium weight); paste and scissors.

Lay the pattern on the green paper, mark and cut out.

Cut out an ellipse in the center of the frog's body a trifle too small for the egg to pass through. (x, Fig. 1.)

Fig. 1

Place the egg in this space, and paste the paper to it.

The frog should be floated in water.

Note: A cardboard pattern could be given to one child and enough green papers for a class marked a few days before the lesson.