Scratch:
- Sequence
 - Adding 2 numbers
 - Multiply and substract
 - Adding 2 variables (sum and product)
 - Enter from keyboard and add 2 variables
 - Conditional Statements (if-then-else)
 - Number Comparison
 - If entered number larger than
 - Enter 2 variables and compare
 - Enter 2 variables, compare and perform an operation
 - Enter 2 variables then swap their values
 - Iteration (repeat until)
 - Motion
 - Additional classes