Gloria: I want to learn about Snowboarding. because, I think skiing is fun. so, I think snowboarding is also fun!
Correct: I want to learn about Snowboarding. I think skiing is fun  so I think snowboarding is also fun!
Correct: I want to learn about Snowboarding because I think it's fun.
EXPLANATION:

You could use either way above. Please make your sentence simpler.

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Hello, Gloria! Thank you for submitting your homework. Please keep in mind the corrections above. Great work!

-Teacher Isabel