Topic library / Knowledge is a web
Topics connect programs, lessons, projects, parent explanations, and later applications. A condition can control a quiz answer, a traffic light, or a robot patrol; learning becomes stronger when the connection is visible.
11 public topic guides
Programs need a reason to begin and a precise instruction about what should happen next. Events provide the reason; commands provide the action.
Coordinates describe position. A screen is a map made from numbers, and every object needs a way to answer: Where am I?
A loop asks a program to repeat useful work without copying the same instruction again and again.
Conditions let a program choose between actions by asking a question that can be answered yes or no.
Variables give names to information that can change. State describes which situation the whole system is currently in.
Sensing gives a program information about contact, distance, colour, input, or another changing part of the world.
Input is information entering a system. Output is the visible, audible, or physical action the system produces.
Debugging is the disciplined work of explaining the difference between what a system should do and what it actually does.
A sensor turns part of the physical world into information a program can inspect.
Feedback happens when a system checks the result of an action and uses that information to adjust what it does next.
An autonomous system uses information and rules to act without a person choosing every individual command.
How to use the library
Each guide names the central logic, shows small examples, points to common mistakes, connects programs honestly, and links to a lesson or project where the idea becomes visible.
Only Coordinates and Movement is labeled a complete topic package in Version 1. Other guides are useful public curriculum connections without claiming every associated class is scheduled.