Design and Technology Academic Year 2017/2018 Grade 7 First Semester.

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Presentation transcript:

Design and Technology Academic Year 2017/2018 Grade 7 First Semester

What we will learn today Lesson Objectives: Define Algorithm , Decomposition and flow charts Practice all the terms through different activities

Algorithm

Algorithm is a list of steps you give to computers to solve a problem or get something done

Algorithm for making a cup of coffee: Discuss

Algorithm for making a cup of coffee: Discuss 1. Get a cup 2. Add 1 teaspoon of coffee to the cup 3. Add water to the kettle 4. Boil the water 5. Add the boiling water to the cup within 2cm of the top 6. Get milk from the fridge 7. Add 1cm depth of milk to the top 8. Stir the coffee 9. Put milk back in fridge

Book Activity

Write algorithm for reaching the end part Group Activity Write algorithm for reaching the end part Move Forward (4) Turn Right Move Forward (3) Turn Left Move Forward (2)

Draw a smiling face in triangle of the top side of the page Game / Book Activity Write your best friend name in the triangle of the right –hand side of the page Draw a smiling face in triangle of the top side of the page

Decomposition When you break a problem down into smaller parts to make it easier to tackle / Solve

Making a computer game is quite a complex problem Making a computer game is quite a complex problem. You could solve this by breaking it down into smaller tasks.

Write algorithm for reaching the end part Group Activity Write algorithm for reaching the end part

Flow charts A flowchart is a diagram that represents a set of instructions. Flowcharts normally use standard symbols to represent the different types of instructions. These symbols are used to construct the flowchart and show the step-by-step solution to the problem.

Flow chart

Draw the flow chart for the login process Group Activity Draw the flow chart for the login process

Write algorithm and draw a flow chart for brushing your teeth Group Activity Write algorithm and draw a flow chart for brushing your teeth

Algorithm for brushing teen Put toothpaste on toothbrush Brush teeth If your tooth clean Return tooth brush Else brush teeth again