Dice are a key component in numerous games of probability and strategy because they are statistically created to provide equal opportunity for all players. Each number has a 1/6 chance of being rolled --- thus making for a fair game for everyone. However, there are a few things you can do to help the dice roll in your favor. Some may consider these techniques cheating, but others may simply view them as researched methods.
Roll Loaded Dice
There's no learning involved with loaded dice, which can be a great way to improve statistics and probability for you. These can be purchased online or at your local gaming shop and will give you a significant advantage in most dice-rolling games. However, you may want to rotate the loaded dice with regular dice so those playing with you do not become suspicious.
Roll Microwaved Dice
Similar to loaded dice, microwaved dice increase the probability for rolling the number you microwaved. To create one, take a regular dice and place it on the value you desire face up in the microwave. Leave it in for 3-5 seconds and allow it to melt only a little. This will cause the plastic to melt toward the bottom of the dice, making your chosen number the lightest and most likely to appear when rolled. Make sure your dice does not appear physically melted, so your rolling opponents won't become suspicious.
Roll and Grab
This technique involves rolling the dice and then quickly picking them up before other players can see the result. As a result, you can declare whatever number you desire, leaving the other players uncertain of the truth. Like the former two, this technique is obviously cheating and may be called out in the game. Depending on the game and how good your acting is, others may ask you to reroll or slow down. However, you may be able to pull this off for a few rounds.
This trick is all about the technique of rolling. By placing the index finger and thumb on the 1 and 6, the dice is rolled along the other remaining numbers (2, 3, 4 and 5). If done properly, the dice will not land on the 1 or the 6, leaving you a higher probability for the other numbers (1/4 rather than 1/6). If you want to roll the 1 or 6, simply cover the numbers that are on opposite sides and bowl away. However, be wary that there is always a chance the dice will land on its side, especially if you're not accustomed to this rolling technique.