Jeroo
Jeroo is a cross-platform educational tool for learning object oriented programming concepts. In particular, the program helps learning concepts such as objects, methods and basic control structures.[1] Jeroo supports three syntactic styles: Java/C#/Javascript, Python, and Visual Basic.
The program features a GUI split in two sub-windows. In the first sub-window, the user can type code to be executed in the Jeroo environment. In the second sub-window, the user can see the effects of their code in a graphical environment. The second sub-window shows an island populated by Jeroos. The user can instruct the Jeroos, via programming in the first sub-window, to accomplish various actions such as moving, eating or picking up flowers.
The tool received a NEEDS "Premier Award Winner Associate Editor's Choice" in 2004.[2]
Jeroo uses many different methods to engage its students such as storytelling and animating execution. The program has been looked at as a very useful and efficient tool to develop experience and knowledge in Computer Programming. There have also been many Computer Science competitions involving the Jeroo program and its features.
Commands
    
A Jeroo can do a few of things such as:
| Action | Code | Extra info | 
|---|---|---|
| hop | hop(n); | When n is an integer greater than 0, this moves the Jeroo n spaces forward. | 
| pick | pick(); | Picks a flower from the Jeroo's location. | 
| plant | plant(); | Plants a flower at the Jeroo's location. | 
| turn | turn(); | This can turn the Jeroo left or right. turn(LEFT); or turn(RIGHT); | 
| toss | toss(); | This makes the Jeroo toss a flower to the space in front of it, disabling a net. | 
| give | give(); | This makes a Jeroo hand off a flower to another Jeroo. The “giver” must face the recipient, but the receiver may face any direction. | 
References
    
-  "Sanders, Eddy - Using Jeroo To Teach Programming Concepts". International Society for Technology in Education. Archived from the original on January 8, 2009. Retrieved 2009-06-10.{{cite web}}: CS1 maint: unfit URL (link)
- "Learning Resource: Jeroo". NEEDS. Archived from the original on October 1, 2011. Retrieved 2009-06-10.