Flowchart
Also known as: flow diagram, process diagram
Grade 6-8
View on concept mapA visual diagram that represents the steps of an algorithm using standard shapes: ovals for start and end, rectangles for processes or actions, diamonds for decisions (yes/no questions), parallelograms for input/output, and arrows to show the flow of execution between steps. Flowcharts help plan programs, document processes, and communicate algorithms to non-programmers.
Definition
A visual diagram that represents the steps of an algorithm using standard shapes: ovals for start and end, rectangles for processes or actions, diamonds for decisions (yes/no questions), parallelograms for input/output, and arrows to show the flow of execution between steps.
💡 Intuition
A flowchart is a map of your algorithm — you can trace the path from start to finish and see every decision point along the way.
🎯 Core Idea
Flowcharts make control flow visible. They're especially useful for understanding loops and branching logic.
Example
🌟 Why It Matters
Flowcharts help plan programs, document processes, and communicate algorithms to non-programmers. They make the logic visible and traceable, which is why they are widely used in education, software design, and business process documentation.
💭 Hint When Stuck
When drawing a flowchart, start with an oval labeled 'Start'. Use rectangles for each action step, diamonds for each decision (with Yes/No branches), and connect everything with arrows. End with an oval labeled 'End'. Trace through the flowchart with test inputs to verify the logic.
Formal View
Related Concepts
🚧 Common Stuck Point
Diamonds are for decisions (yes/no questions) only. Rectangles are for actions/processes.
⚠️ Common Mistakes
- Using the wrong shapes—diamonds must be for decisions only, rectangles for processes, ovals for start/end
- Creating flowcharts with missing arrows or dead ends where the flow has nowhere to go
- Making flowcharts too detailed or too abstract—aim for a level of detail that matches your audience
Frequently Asked Questions
What is Flowchart in CS Thinking?
A visual diagram that represents the steps of an algorithm using standard shapes: ovals for start and end, rectangles for processes or actions, diamonds for decisions (yes/no questions), parallelograms for input/output, and arrows to show the flow of execution between steps.
When do you use Flowchart?
When drawing a flowchart, start with an oval labeled 'Start'. Use rectangles for each action step, diamonds for each decision (with Yes/No branches), and connect everything with arrows. End with an oval labeled 'End'. Trace through the flowchart with test inputs to verify the logic.
What do students usually get wrong about Flowchart?
Diamonds are for decisions (yes/no questions) only. Rectangles are for actions/processes.
Prerequisites
Next Steps
How Flowchart Connects to Other Ideas
To understand flowchart, you should first be comfortable with pseudocode and algorithm. Once you have a solid grasp of flowchart, you can move on to design specification.