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Coding For Kids For Dummies, 3rd Edition
book

Coding For Kids For Dummies, 3rd Edition

by Camille McCue
October 2025
Beginner
288 pages
5h 58m
English
For Dummies
Content preview from Coding For Kids For Dummies, 3rd Edition

CHAPTER 7

Writing Functions and Scattering Stuff

Pufferfish Puff is an action-packed toy where silly pufferfish bounce around an ocean scene. You’ll make it interactive by adding a user input that triggers each pufferfish to puff up — as if just startled! Using randomness, you’ll scatter the puffers in all directions and make them zoom and ricochet off the edges. It’s an underwater explosion of motion!

You’ll start with a sea-themed backdrop and one pufferfish sprite. Then, using a new concept called cloning, you’ll create a whole school of puffers that inherit all the code and attributes of the original pufferfish. Now that your code is getting longer and more complex, you’ll also build custom code packages called functions to organize your program like real coders do.

This project brings together lots of skills: randomness, motion, loops, cloning, and functions. It’s your biggest coding challenge yet (and maybe your puffiest). Let’s go!

A vibrant, illustrated underwater scene featuring several smiling, round pufferfish with spikes. They are scattered throughout the blue water, near colorful coral and seaweed.

Brainstorm

You can swap the pufferfish for any character or sea creature. Scratch has several sea critters, including a crab, jellyfish, an octopus, and even a shark! Or you can create something altogether different to clone and move around your toy — bouncy balls, fireflies, cats — it’s your choice. Get creative and start coding!

Start a New Project

Begin creating your Pufferfish Puff program by starting a new project. Name your project ...

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Publisher Resources

ISBN: 9781394359769