Standard form (a.k.a. standard index form), is a system of writing numbers which is particularly useful when using either very large or very small numbers. It is based on using powers of 10 to express how big or small a…
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Find the Logic Error
Check the following pieces of code. The syntax of the code is correct and the programs do run. However, while testing these programs, you will notice that they do not always produce the expected output! This is because each program…
HCF and LCM algorithms
In this Python challenge we will write two functions to calculate and return the Highest Common Factor (HCF) and the Lowest Common Multiple (LCM) of two numbers. Highest Common Factor (HCF) Note that the HCF is also known as the…
Euclid’s Division Algorithm
Euclid’s division algorithm is used to calculate the Highest Common Factor (HCF) of two positive numbers. It is based on Euclid’s division lemma and can be implemented in just a few lines of high level code. You can read more…
Input, Output & Storage Devices: Quiz!
Computers hardware consists of all the components that you will find inside the computer (Motherboard, CPU, RAM, graphic card, sound card, network card, etc.) as well as all the peripherals/devices than you can plug to a computer. Peripherals are often…
ASCII Quiz Challenge
ASCII Code The ASCII code (Pronounced ask-ee) is a code for representing English characters as numbers, with each character assigned a number from 0 to 127. For example, the ASCII code for uppercase A is 65. The extended ASCII contains…
Prolog – Food Web Challenge
Prolog is a language built around the Logical Paradigm: a declarative approach to problem-solving. There are only three basic constructs in Prolog: facts, rules, and queries. A collection of facts and rules is called a knowledge base (or a database)…
Scratch – Sprite Movement using a Touchscreen
Many tutorials on how to create a game in Scratch will be based on using the arrow keys to control the main sprite. This is a great approach indeed but is not suitable if you are designing the game toe…
Thank You Medical Staff and Key Workers!
During the coronavirus pandemic, the rainbow has become a symbol of gratitude for the medical staff working in hospitals as well as all the other key workers who carried on working to provide essential services to their community. All over…
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