Educational golf club

An educational golf club pairing with an educational golf ball, the educational golf club comprising:

• a shaft made of graphene or synthetic resin, the shaft comprising:
• a first, a second, and a third round bars, which are coupled with one another to be adjusted in length of the shaft;
• a plurality of grooves formed on an outer circumferential surface or an inner circumferential surface of the first and the second round bars in order to adjust an entire weight of the educational golf club;
• a weight increasing means disposed inside the third round bar, the weight increasing means having
• a first space part which is openable and formed in the third round bar, and
• a heavy body filling the first space part, wherein the heavy body is made of one from the group consisting of synthetic resin, metal, wood, and stone;
• and
• a hitting sound generating means arranged below the weight increasing means, both of the weight increasing means and the hitting sound generating means disposed inside the third round bar, the hitting sound generating means having
• a second space part formed in the third round bar and filled with liquid with predetermined weight,
• an impacting body movable inside the second space part,
• an impacting protrusion formed at one side of the second space part to generate a hitting sound when colliding against the impacting body, and
• an elastic member to increase movement speed of the impacting body when a user swings the educational golf club;
• and
• a golf club head made of silicon,
• wherein the shaft and the golf club head are formed integrally or detachably with each other,
• wherein, when the shaft and the golf club head are formed detachably with each other, the shaft has a spiral groove formed at a lower end portion thereof and the golf club head has a spiral thread coupled with the spiral groove,
• wherein the spiral groove and the spiral thread are formed to be coupled with each other in a direction of a hitting side of the golf club head to prevent separation of the shaft from the golf club head when the user swings the educational golf club, and
• the educational golf ball made of rubber, synthetic resin, silicon or compressed sponge.