# Computational thinking

  1. The process of formulating a problem.  
  2. Finding the solution to the problem.  
  3. Expressing the solution in a way such that both humans and machines (computers) can understand.  
  4. In case of multiple solutions, identify the optimal solution that best meets the given context.


# Visual programming
**Visual programming language** is a language that allows us to write programs visually (with the help of graphics) instead of writing code in the form of conventional text.

## Tools

- Agentcubes
- Bubble
- Flowgorithm
- Scratch
- StarLogo
- Toon Talk
- VIPLE
- Visual Logic  
- etc.

# About scratch  

- Scratch is a block-based visual programming famework.  
- The registered users can create online projects using the block-like interface.  
-  The interface / service was developed by Massachusetts Institute of Technology (MIT) Lab.
- `scratch2.0` is the latest version for Windows 10+.
- `scratch1.4` is for Windows 2000, XP, Vista, 7, and 8,  
- Downloads are available for Mac OS and Debian/Ubuntu.

# Scratch Interface

## Blocks Palette
Shows all the blocks available for use.

## Categories / Blocks 

- Motion  
- Looks  
- Sound  
- Events  
- Control  
- Sensing  
- Operators  
- Variables  
- My blocks  
- Extensions  


## Script area  
Area where scripts are created and viewed pertaining to the current sprite.

# Stage  
Place where all the action takes place.

Visual programming for beginners

Visual programming languages use graphical elements to write code. Scratch, developed by MIT, is a popular tool for creating projects with block-like interfaces.