Table 4 VBL in the reviewed articles.

AgentSheets

1

1

2

AgentSheets/AgentCubes

1

1

2

Alice

1

1

MIT App Inventor

1

1

MS Kodu

1

1

2

Scratch

3

3

3

2

11

Scratch/ModKit

1

1

Total

6

6

5

3

20