Create a Basic Substitution Cipher Code

https://kidscodecs.com/create-basic-cipher/

Wikipedia – Substitution Cipher

https://en.wikipedia.org/wiki/Substitution_cipher

Practical Cryptography – Simple Substitution Cipher

http://practicalcryptography.com/ciphers/simple-substitution-cipher/

Substitution Ciphers

https://www.math.cornell.edu/~mec/2003-2004/cryptography/subs/substitution.html

Simple Substitution Cipher Encoder

http://substitution.webmasters.sk/simple-substitution-cipher.php

The Black Chamber – Learn about Codes and Codebreaking

http://www.simonsingh.net/The_Black_Chamber/index.html

Get Started with Scratch

https://kidscodecs.com/get-started-scratch/

Scratch Official Site

https://scratch.mit.edu/

Scratch Starter Projects

https://scratch.mit.edu/starter_projects/

Scratch – Explore Projects

https://scratch.mit.edu/explore/projects/all/

Code Club – Scratch Projects

https://codeclubprojects.org/en-GB/scratch/

Make Your Scratch Code More Efficient With Custom Blocks

https://code.tutsplus.com/tutorials/make-your-scratch-code-more-efficient-with-custom-blocks–cms-24239

The Birthday Paradox

https://kidscodecs.com/birthday-paradox/

Wolfram Alpha: Birthday Paradox Calculator

http://www.wolframalpha.com/input/?i=birthday+problem+calculator

Understanding the Birthday Paradox

https://betterexplained.com/articles/understanding-the-birthday-paradox/
https://www.scientificamerican.com/article/bring-science-home-probability-birthday-paradox/

About Combinatorics

http://www.mathsisfun.com/combinatorics/combinations-permutations.html

Birthday Paradox/Problem

https://en.wikipedia.org/wiki/Birthday_problem

On Sorting

https://kidscodecs.com/on-sorting/

Visual Algorithm Sorting

https://visualgo.net/en/sorting

Algorithm Visualizations: Comparison Sorting Algorithms

https://www.cs.usfca.edu/~galles/visualization/ComparisonSort.html

RosettaCode Sorting Algorithms

https://rosettacode.org/wiki/Category:Sorting_Algorithms

Geeks for Geeks: Sorting Algorithms

http://www.geeksforgeeks.org/sorting-algorithms/

Sorting Out the Basics Behind Sorting Algorithms

https://medium.com/basecs/sorting-out-the-basics-behind-sorting-algorithms-b0a032873add

Don’t Feed the Trolls

https://kidscodecs.com/dont-feed-trolls/

How Should My Kid Respond to Haters and Trolls Online?

https://www.commonsensemedia.org/cyberbullying/how-should-my-kid-respond-to-haters-and-trolls-online

What is the best way to stop internet trolls?

http://www.bbc.com/future/story/20160318-what-is-the-best-way-to-stop-internet-trolls

Cyberbullying Guidance and Practical PSHE Toolkit

http://www.childnet.com/our-projects/cyberbullying-guidance-and-practical-toolkit

Help Your Child be a Good Online Friend

http://www.childnet.com/blog/help-your-child-be-a-good-online-friend

How Trolls are Ruining the Internet

http://time.com/4457110/internet-trolls/

What is Trolling and How Does it Affect My Kids?

https://www.teensafe.com/blog/trolling-affect-kids/

What’s a micro:bit?

https://kidscodecs.com/get-started-microbit/

micro:bit Foundation

http://microbit.org
http://microbit.org/resellers/

micro:bit Resources Page

https://kidscodecs.com/resources/microbit/

Shadow Pictures

https://kidscodecs.com/shadow-pictures/

Drzach & Suchy

http://www.drzachsuchy.ch/schattenbilder

Who Knew Turtles Can Draw?

https://kidscodecs.com/turtles-can-draw/

A Simple Turtle Tutorial for Python

https://github.com/asweigart/simple-turtle-tutorial-for-python/blob/master/simple_turtle_tutorial.md

Easy Designs – Turtle Graphics Python

http://www.instructables.com/id/Easy-Designs-Turtle-Graphics-Python/

Notes on Using Python’s Turtle Built-In Commands

http://www.eg.bucknell.edu/~hyde/Python3/TurtleDirections.html

Getting Started with Minecraft

https://kidscodecs.com/get-started-minecraft/

Official Minecraft Website

https://minecraft.net/en-us/
http://www.minecraftmods.com/

Minecraft Wiki

http://minecraft.gamepedia.com/Minecraft_Wiki

Minecraft Beginner’s Guide

https://minecraft.gamepedia.com/Tutorials/Beginner%27s_guide

Minecraft Gameplay and Game Modes

https://minecraft.gamepedia.com/Gameplay

Minecraft Tutorials

https://minecraft.gamepedia.com/Tutorials

The Parents’ Guide to Minecraft

https://www.howtogeek.com/210923/the-parents-guide-to-minecraft/

Share your ‘Minecraft’ creations in 3D

https://www.engadget.com/2017/07/31/minecraft-3d-sharing-and-better-together-beta/

Chain of Command, Chain of Language

https://kidscodecs.com/markov-create-random-stories/

Github Text Generation Repository/Sample Code

https://github.com/clarissalittler/text-generation

Natural Language Generation

The general process of trying to create text that looks like it was written by a person is called natural language generation
https://en.wikipedia.org/wiki/Natural_language_generation

Project Gutenberg

Project Gutenberg has a massive number of old books available as plain text files suitable for setting up your Markov chain
http://www.gutenberg.org/

Markov Chains Explained Visually

http://setosa.io/ev/markov-chains/

Markov and You

https://blog.codinghorror.com/markov-and-you/

Designing a Programming Language, Part II

https://kidscodecs.com/designing-programming-language-part-ii/

Pangolin Code Repository

https://github.com/clarissalittler/creating-languages

Lambda Calculus

http://www.cs.unc.edu/~stotts/723/Lambda/overview.html

Fortran Reference

A reference on Fortran 77, a version of Fortran that has call-by-reference functions and is a good glimpse into what older languages looked like
http://web.stanford.edu/class/me200c/tutorial_77/

Forth

PangolinV1 is meant to look like a simple, modern, language. Forth is an example of just how different a programming language can look while still being Turing complete
http://thinking-forth.sourceforge.net/

Pharo

Another very different kind of programming language is Pharo, which has a common ancestor with Scratch!
http://pharo.org/

How To Create a Programming Language

https://kidscodecs.com/build-a-programming-language-1/
https://kidscodecs.com/designing-programming-language-part-ii/

Your First Sewing Machine

https://kidscodecs.com/first-sewing-machine/

Idea Room

http://www.theidearoom.net/simple-sewing-projects-kids/

Crazy Little Projects

http://crazylittleprojects.com/2014/01/25-beginnger-sewing-projects.html

So Sew Easy

http://so-sew-easy.com/fun-easy-sewing-projects-kids/

The Best Sewing Machine for Beginners

http://www.shelikestosew.com/best-sewing-machines-beginners/

Best Sewing Machines for Beginners

http://www.mysewingadventure.com/sewing-for-beginners/

Buying a Sewing Machine for Beginners

https://www.youtube.com/watch?v=jLdwQ4q32r8