The slides was used to introduce a student to IGCSE CS O-level specifically low level language with example, flow charts and pseudo code. A 2D python array code summing on condition was explained using comprehensive lists I have over 20 years of experience in both teaching & in completing computer science projects with certificates from Stanford, Alberta, Pennsylvania, California Irvine universities. I teach the following subjects: 1) IGCSE A-level 9618 / AS-Level 2) AP Computer Science exam A 3) Python (basics, automating staff, Data Analysis, AI & Flask) 4) Java (using Duke University syllabus) 5) Descriptive statistics using SQL 6) PHP, SQL, MYSQL & Codeigniter framework (using University of Michigan syllabus) 7) Android Apps development using Java 8) C / C++ (using University of Colorado syllabus) Check Trial Classes: 1) A-Level Trial Class : https://youtu.be/v3k7A0nNb9Q 2) AS level trial Class : https://youtu.be/wj14KpfbaPo 3) 0478 IGCSE class : https://youtu.be/sG7PrqagAes 4) AI & Data Science class: https://youtu.be/CwCe1pKOVI8 https://elmalla.info/blog/68-tutor-profile-slide-share

1. IGCSE O/L Instructor
Ahmed Elmalla
https://elmallla.info

2. Students Brain
Building brian chunks / Physical Exercise
Creativity vs emotional stability
Focus mode vs Diffuse mode
hands-on interesting programming projects
Real-life applications of programming

3. Low Level programing language
Assembly language – a low-level chip/machine
specific programming language that uses mnemonics
total = first + second + third

4. Low Level language - Example
total = first + second + third

5. High Level programing language
High-level language programs are machine
independent, portable and can be run on any type of
computer/chip, provided there is a compiler or
interpreter available. For example, Java, Python and
Visual Basic® (VB) are high-level languages often used
for teaching programming.

6. High Level programing language
Python code:
total = 0
first =10
second =20
third =40
Total = first + second + third
Print (“Total = ”, total )

7. Problem Description
Build a program to get the exam grade for provided marks.
Mark < 40 then the Grade is Fail
Mark < 60 then the Grade is Pass
Mark < 80 then the Grade is Merit
Mark > 80 then the Grade is Distinction

8. Flow Charts
shows diagrammatically, using a set of symbols linked
together with flow lines, the steps required for a task
and the order in which they are to be performed. These
steps, together with the order, are called an algorithm

9. Flow Charts

10. Pseudo Code
Pseudocode is a method of showing the detailed
logical steps in an algorithm, using keywords,
identifiers with meaningful names and mathematical
operators to represent a solution

11. Pseudo Code

12. Python
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13. Storing Student score in a 2D Array

14. Counting Students with score > 4