Answer key

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Last edited 10 days ago by Learn LoopHQ.

Chapter: 06. Scratch Programming Game Creation

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To calculate the turn angle, you divide 360 degrees by the number of sides of the polygon.

Relational Operators are used to compare the relationship between two values or variables (e.g., greater than, less than, or equal to), and they return a true or false result based on the comparison.

The next costume block switches the sprite’s current appearance to its next available costume in sequence, and when placed inside a loop with small pauses, it creates the illusion of animation or movement.

You would choose the “Upload Sprite” option from the “Choose a Sprite” tool’s sub-menu to import a picture file from your system.

This block helps to fix the position of the sprite at a specified horizontal (x) and vertical (y) location on the stage, useful for precise placement or bringing a sprite back if it moves off-screen.

wait blocks pause the execution of a script for a specified amount of time, allowing for controlled timing between actions, animations, or sounds.

Looping in Scratch is the automatic repetition of a set of instructions more than once, and its main benefit is saving time and effort by avoiding the need to write the same code multiple times.

change pen color by adjusts the pen’s color, saturation, brightness, or transparency by adding or subtracting a specified value from its current setting, while set pen color to directly sets the property to an exact given value, regardless of its current state.

This combination is used because a circle is 360 degrees, so repeating a very small movement and a very small turn 360 times creates a smooth, continuous curve that approximates a circle.

Blocks are puzzle piece shapes that serve as visual instructions, which are dragged and combined to create a program or script in Scratch.

To remove a block from a script, you simply drag it to the left, away from the coding area.

Scratch was created by Mitchel Resnick and his team at the MIT Media Lab in 2007.

The forever block executes a set of instructions continuously and indefinitely until the program is manually stopped, whereas the repeat block executes instructions for a specific, predetermined number of times and then stops automatically.

In a computer program, data refers to all the numbers, text, dates, or pictures that are used, and which can be stored in memory for later access.

Scratch is primarily used for creating games, animated stories, and interactive arts, which can then be shared online.

You can add a sprite by painting a new one using the drawing tools, or by uploading a sprite saved on your system.

A variable in Scratch is a container in computer memory that stores data (numbers, text, etc.) and whose value can change during the execution of a program.

The pen up block stops the sprite from drawing a line as it moves, while the pen down block makes the sprite draw a continuous line wherever it moves.

The Looks blocks category controls how a sprite appears on stage, including changing costumes, size, and displaying speech bubbles.

The if...then...else block is more suitable when you need to specify two different outcomes: one if a condition is true, and a different one if the condition is false, ensuring an action is taken in both scenarios.

To add Pen blocks, you need to click on the “Add Extension” button at the bottom left corner of the Code tab and then select the “Pen” option.

The stamp block duplicates the sprite’s current image onto the stage at its current location; by combining it with movement and turning blocks within a loop, the sprite can leave a trail of its own image to create intricate patterns.

Two main components are the Stage Area, where actions occur, and the Script Area, where programming blocks are assembled.

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