pxt-calliope/docs/reference/js/lessons/pong/quiz.md

# pong quiz

create the game Pong.

## Name

## Directions

Use this activity document to guide your work in the [pong tutorial](/lessons/pong/tutorial)

Answer the questions while completing the tutorial. Pay attention to the dialogues!

## 1. Create two variables that will keep track of the x-position and y-position of the ball, and assign the variables to their initial values.

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## 2. Create two variables that keeps track of the velocity (or the speed and direction) of the ball, and assign the variables to their initial values.

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## 3. Write the code that plots the initial position of the paddle and the ball.

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## 4. Write the code that moves the paddle up when Button A is pressed. (Don't worry about setting 'game running' to true.)

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## 5. Write the code that moves the paddle up when Button B is pressed. (Don't worry about setting 'game running' to true.)

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## 6. Write the code to update the y-velocity. (Hint: look at the function "update y velocity".)

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## 7. Write the code to move the ball. (Hint: look at the function "move ball".)

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