Which one is better?

[hwhwhwhw]

Dear Teachers,

Which sentence is better in expressing its meaning(i.e. it tells me what to learn and how to learn)?

The classes provide me study maps and tools that help me explore further knowledge.

The classes act as study maps and tools that help me explore further knowledge.

 

[schmoozed]

I think class cannot act as a tool; but here's a suggestion...

The classes provide study maps and tools, to help me expand my knowledge.

 

[Anglika]

I think class cannot act as a tool; but here's a suggestion...

The classes provide study maps and tools, to help me expand my knowledge.

Good sentence, but could you perhaps explain why you feel a comma is required?