# how to make probability maths working model – tlm – diy – cardboard – simple and easy with explanation

In this post we write about making of the probability maths working model – tlm – diy – cardboard – simple and easy

Creating a working model that uses a rotating mechanism powered by a 9V battery to simulate throwing dice and determining a lucky number can be a fascinating project. This model will involve some basic electronics and mechanics.

Here’s how you can create this model and incorporate the concept of probability into the game:

### Materials Needed:

• A small motor (suitable for use with a 9V battery)
• A 9V battery and battery holder
• Wires and a switch
• Cardboard or foam board (for the base and dice container)
• A small plastic ball (like a ping pong ball)
• Dice (or a custom-made dice mechanism)
• Markers or colored paper (to decorate and label the model)
• Glue, tape, and scissors or a craft knife
• A small container or cup (to catch the ball)

### Step by Step Video Instructions:

#### 1. Set Up the Base:

• Use a sturdy piece of cardboard or foam board as the base for your model. Ensure it’s large enough to hold the motor and the dice container.

#### 2. Create the Dice Container:

• Make a small box from cardboard or foam board where the dice will be placed. Ensure it’s large enough for the dice to roll freely.
• Cut a hole at the bottom of the box to attach it to the motor’s shaft, allowing the box to rotate when the motor is powered.

#### 3. Attach the Motor:

• Secure the motor to the base. Make sure the motor’s shaft can rotate the dice container smoothly.
• Connect the wires from the motor to the battery holder and add a switch in between to control the power.

#### 4. Prepare the Dice Mechanism:

• Place one or more dice inside the container. Alternatively, you can create a custom dice with different numbers or symbols if you want to define specific “lucky” numbers.

#### 5. Set Up the Ball Mechanism:

• Create a ramp or a guiding tube from the edge of the container to a small cup or container. This will guide the ball after it’s thrown to indicate the “lucky” number.
• Position the cup so that it catches the ball, and label sections of the ramp or cup with numbers corresponding to the dice results.

#### 6. Decorate the Model:

• Use markers or colored paper to decorate and label the model. Clearly mark the numbers on the cup or ramp where the ball will land.

### Demonstration and Working Principle:

1. Powering the Motor:
• Turn on the switch to power the motor using the 9V battery. The motor will rotate the dice container, causing the dice to roll inside.
2. Throwing the Ball:
• Throw the small plastic ball into the rotating dice container. The ball will interact with the rolling dice, and after a few seconds, turn off the motor to let the dice settle.
3. Determining the Lucky Number:
• The ball will follow the ramp or guide to land in the labeled cup or section. The number where the ball lands corresponds to the “lucky” number.
4. Probability Explanation:
• Each number on the dice has an equal probability of being the “lucky” number. For a single six-sided die, each number (1 through 6) has a 1/6 (or about 16.67%) chance of being rolled.
• The interaction between the rolling dice and the thrown ball adds an element of randomness, similar to real-life dice throwing.

### Example Playing Scenario:

1. Player’s Turn:
• Player 1 turns on the motor, which starts rotating the dice container.
• Player 1 throws the ball into the container.
• After a few seconds, Player 1 turns off the motor, letting the dice settle.
• The ball follows the ramp and lands in the section labeled with a number (e.g., 4).
2. Determining the Winner:
• If multiple players are playing, each player takes turns.
• The player whose turn results in the ball landing on a predetermined “lucky” number (e.g., 6) wins the game.

### Final Thoughts:

This model combines basic electronics, mechanics, and the principles of probability in an interactive and educational game. By building and playing with this model, players can gain a better understanding of random events and probability while having fun.

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