​Lesson objectives:

• Prepare a solution from the decomposed parts of a problem to facilitate the design, implementation, and review of a program.​

• ​Create pseudocode and flowcharts to represent algorithms for complex programming problems.

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Warm up activity

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Research activity:

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Computational thinking:

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Computational thinking:

It comprised of three parts:

1. Decomposition

2. Abstraction

3. ​Algorithmic thinking

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Research activity:

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Representing Algorithms

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Representing Algorithms

• Remember, algorithms can be expressed in various ways before they are implemented using a programming language.​

• Two ways to represent an algorithm:

  1- Flowcharts

  2- ​pseudocode

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​Flowcharts:

Flowcharts are a way to visually represent algorithms. Flowcharts are used when designing programs. The instructions in them should be clear and precise. Flowcharts are read from top to bottom just like programming code

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Flowchart design elemnts:

​Pseudocode:

Pseudocode is a text-based way to represent algorithms using structured English. There is no specific syntax for pseudocode, but it should be human readable so that a programmer can translate it into program code.

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Variables:

• Variables are a basic method of data storage that you can use in programs.​

• ​They can store a piece of information using either text, number or Boolean data types.

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Mathematical Operations:​

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Data Types:

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