Volleyball is governed by the Fédération Internationale de Volleyball (FIVB). Understanding these rules ensures smooth play and proper rotation.

Court and Team Composition

• The court is 18 meters long and 9 meters wide, divided by a net (2.43m high for men's, 2.24m for women's).
• Each team has six players on the court: three in the front row and three in the back row.
• Substitutions are limited (usually six per set in school volleyball).

Scoring System (Rally Scoring)

• A point is awarded on every rally, regardless of which team served.
• A set is won by the first team to reach 25 points with a minimum 2-point lead.
• The deciding (fifth) set is played to 15 points.
• The team that wins the best of five sets wins the match.

Rotation and Service

• Players rotate clockwise when their team gains the right to serve.
• Service must be made within eight seconds after the referee's whistle.
• Players must serve in their correct rotational order.

Common Faults

• Foot fault: The server's foot crosses the service line before contact.
• Double hit: The same player contacts the ball twice consecutively.
• Four hits: A team hits the ball more than three times before returning it.
• Net fault: Touching the net while playing the ball or interfering with play.
• Rotation error: A player serving or playing out of rotational order.

Playing Faults

• The ball lands outside the court boundaries.
• The ball passes completely through the net.
• A player touches the ball with an open hand (except during blocking).
• A back-row player attacks the ball above the net in the front zone.

Libero Player

• The libero is a defensive specialist who wears a different color jersey.
• The libero cannot serve, attack above the net, or set in the front zone.

Handball is governed by the International Handball Federation (IHF). The fast-paced nature of handball requires strict adherence to rules for safety and fair play.

Court and Team Composition

• The court is 40 meters long and 20 meters wide.
• Each team has seven players: six court players and one goalkeeper.
• A minimum of five players is required to start or continue a game.

Scoring

• A goal scores one point.
• A goal is scored when the entire ball crosses the goal line between the posts and under the crossbar.
• The team with more goals at the end of two halves wins.

Dribbling and Steps

• Players may dribble the ball and take up to three steps without dribbling.
• After dribbling stops, the player may not dribble again.
• Taking more than three steps without dribbling is a violation.

The Six-Meter Line (Goal Area)

• Only the goalkeeper may enter the six-meter line area.
• If an attacking player enters this area, play is stopped for a violation.
• The goalkeeper may move freely within this area.

The Seven-Meter Line

• A seven-meter throw is awarded when a defender fouls an attacker in the act of shooting.
• The shooter stands at the seven-meter line with only the goalkeeper defending.

Common Fouls

• Pushing, holding, or hitting an opponent.
• Grabbing the ball from an opponent's hands.
• Impeding an opponent's movement without ball contact.
• Goalkeeper leaving the goal area and participating in outfield play.

Goalkeeper Rules

• The goalkeeper may touch the ball with any part of the body within the goal area.
• The goalkeeper may not hold the ball for more than three seconds.
• The goalkeeper may not re-enter the field after being substituted.

Throw-In and Throw-Off

• Throw-in (from out of bounds) is taken by the team that did not touch the ball last.
• Throw-off (at the beginning of each half) is taken from the center line.

Tennis is governed by the International Tennis Federation (ITF). Students must understand scoring, serving, and court positioning to play effectively.

Court and Equipment

• Tennis is played on a rectangular court divided by a net (0.915m high at center).
• Singles court is 23.77m long and 8.23m wide.
• Doubles court extends the width to 10.97m.

Scoring System

• Points are counted as 0 (love), 15, 30, 40, and game.
• A player must win by two points to win a game.
• A set is won by the first player to reach six games with a two-game lead.
• A match is best of three sets (usually in school competitions).

Serving Rules

• The server stands behind the baseline, alternating between the deuce court and ad court.
• The server has two attempts (first serve and second serve).
• A fault occurs if the ball hits the net, lands outside the service box, or the server foot faults.
• Two faults result in a double fault (loss of point).
• A let is called if the ball hits the net but lands in the correct service box; the serve is replayed.

Service Box Rules

• The ball must land diagonally across the net into the opponent's service box.
• In singles, the service box is the full width between the singles sidelines.
• In doubles, the service box uses the doubles sidelines.

Player Positioning

• The receiver may stand anywhere on their side of the net.
• The server's partner may stand anywhere on their side but must not obstruct the receiver.

Common Faults and Violations

• Foot fault: Server's foot touches or crosses the baseline before contact.
• Double fault: Two consecutive failed serves.
• Out: The ball lands outside the court boundaries.
• Let: Ball hits the net but lands in the correct area; the point is replayed.

Conduct Rules

• Players must not distract opponents.
• Coaching during matches is generally not allowed in school competitions.
• Unsportsmanlike behavior results in point penalties or disqualification.

Table tennis is governed by the International Table Tennis Federation (ITTF). The rules emphasize quick service and fair play.

Court and Equipment

• The table is 2.74m long, 1.525m wide, and 76cm high.
• The net is 15.25cm high and extends 15.25cm beyond each side of the table.
• The ball has a diameter of 40mm and must be white or orange.

Scoring System

• A game is played to 11 points.
• A player must win by two points.
• A match consists of the best of seven games (or best of five in some school competitions).
• Points are scored on every rally regardless of who served.

Service Rules

• The serve must start with the ball resting on the open palm of the server's free hand.
• The ball must be thrown vertically upward (at least 16cm) and struck as it descends.
• The server must make contact with the ball behind the end line and above the table surface.
• The ball must first touch the server's side and then pass over the net to touch the receiver's side.

Service Faults

• The ball does not touch the server's side first.
• The ball touches the net during service.
• The ball lands outside the receiver's side of the table.
• The server fails to toss the ball properly.

Let Service

• A let is called if the ball touches the net during service but otherwise would have been a good service.
• The serve is replayed.

Playing Faults

• Double hit: A player hits the ball twice consecutively.
• Touching the table: A player's free hand touches the playing surface during a rally.
• Net contact: The ball touches the net during play.
• The ball must pass over the net and touch the opponent's side.

Order of Play

• In doubles, players must alternate hitting the ball.
• The server alternates every two points until the game ends.

Conduct

• Players must behave respectfully to officials and opponents.
• Shouting or disruptive behavior results in warnings and point penalties.

To play by observing rules, you must actively apply them during match situations. When officiating, your knowledge ensures fair outcomes.

Key Principles for Players

1. Know the scoring: Understand how points are earned in each sport.
2. Recognize violations: Identify when you or an opponent commits a violation.
3. Accept officials' decisions: Respect referees' judgments without argument.
4. Maintain self-control: Avoid behavior that leads to technical fouls or disqualification.

Key Principles for Officials

1. Know the rules thoroughly: Understand all regulations for the sport you are officiating.
2. Use proper signals: Communicate clearly using standardized hand signals.
3. Be impartial: Make decisions based solely on what you observe.
4. Communicate clearly: Announce scores, violations, and penalties audibly.

Practical Application Example

During a basketball game, the point guard dribbles toward the basket, receives the ball again, and begins to dribble. According to basketball rules, this is double dribble—a violation. The referee should blow the whistle and signal the violation, awarding the ball to the opposing team. If the player continues without dribbling, it becomes traveling after two steps. Understanding these rules helps players avoid mistakes and officials make correct decisions.

Officiating Equipment

Different sports use specific equipment for officiating:

• Basketball: Whistle, stopwatch, score sheet
• Volleyball: Whistle, flags (for line judges)
• Handball: Whistle, signals for throws
• Tennis: Whistle, scoreboard, foot fault indicator
• Table Tennis: Whistle, scoreboard

In Tanzania, understanding sports rules is valuable beyond the classroom. For example, when organizing a community volleyball tournament in your village or school, you will need to apply rotation rules, scoring (rally scoring to 25 points), and common fault decisions to ensure fair play among teams. This knowledge allows you to serve as a referee or organizer, helping the competition run smoothly and teaching younger players proper rules, which promotes organized sports activities in your community.