In this paper, the extended (G  /G)-expansion method has been suggested for constructing
travelling wave solutions of the Schamel–Korteweg–de Vries (s-KdV) and the Schamel equations
with aid of computer systems like Maple or Mathematica. The hyperbolic function solutions and the
trigonometric function solutions with free parameters of these equations have been obtained. More-
over, it has been shown that the suggested method is elementary, effective and has been used to solve
nonlinear evolution equations in applied mathematics, engineering and mathematical physics.