Binary

Binary number system *
CS Unplugged teaches binary
Khan Academy's intro to binary
Understanding binary with cards - activity
Binary game in Scratch - activity

Algorithms

Intro to algorithms *
Kids.net on Algorithms
A sample algorithm - video
CS Unplugged Sorting Algorithms
My Robotic Friends
Dancing to algorithms - videos

Flowcharts

WikiJunior: Programming for Kids
Flowcharts for practical tasks Courtesy: Mark Newman
Fifteen funny flowcharts
Flowcharting tool: draw.io
Other flowcharting tools: Lucidchart and SmartDraw

Problem decomposition

What is decomposition? *
Decomposition examples *

* Primary resources are highlighted in red.