As follows:

Tools/materials: pencil, eraser, a4 paper.

Methods/steps:

1, first of all, draw the outline of the frog's eyes on a4 paper, as shown in the picture below.

2, then draw the frog's eyes, as shown in the picture below.

3, then draw the frog's mouth, as shown below.

4, then draw the frog's two front legs, as shown below.

5. Then draw the frog's two back legs and you're done.

The frog (Frog) belongs to the Chordata, Amphibia, Caudipterygium, Frogs, amphibians, adults have no tails, the eggs are laid in the water, in vitro fertilization, hatch into tadpoles, with gills to breathe, after the mutation, the adult mainly with lungs to breathe, and also use the skin to breathe. The vast majority of frogs reproduce by in vitro fertilization, where the fertilized eggs hatch into tadpoles outside the mother's body. Only 10 to 12 species of frogs in the world have evolved to fertilize their eggs internally, and some of them expel the fertilized eggs from their bodies to hatch into tadpoles. However, frogs are specifically referred to zoologically as black-spotted side-pleated frogs. Frogs have always been considered oviparous, but scientists have discovered that a species of frog living in the rainforests of Sulawesi, Indonesia, is capable of laying tadpoles. The frog is the only one of more than 6,000 species of frog in the world that can "lay tadpoles.

The frogs are slim and mostly good swimmers. The neck is inconspicuous, with no ribs. The ulna and radius of the forelimb are fused, and the tibia and fibula of the hindlimb are fused, so the claws can not rotate flexibly, but the limbs are well-muscled. The most primitive frogs began to evolve early in the Triassic period. The earliest present-day frogs with jumping movements appeared in the Jurassic period. Because frogs feed mainly on insects and other invertebrates, they must live near water. There are about 130 species of frogs in China, and almost all of them are capable of destroying pests in forests and farmland.