Using the evidence-based strategy of sentence combining, students combine multiple ideas into a single sentence. They then receive instant feedback designed to help them improve the clarity and precision of their sentences.

First Attempt: Student joins the sentences using but:

The student receives feedback about how the joining word needs to communicate a reason for the flying. 

Second Attempt: Student joins sentence using and:

This feedback guides the student on how to make their sentence even more specific by suggesting that the joining word should show that having wings is the reason bats fly.

Third attempt: Student joins sentence using so:

The feedback from the third attempt gives the student further advice on how to tighten the sentence by using correct punctuation. In this case, while the student used the correct joining word, it needs a comma. It also gives you an example of when and how to use commas by matching the sentence structure to the structure the student used. 

Fourth Attempt: Student adds a comma.
Finally, the feedback leads the student to write a precise and coherent sentence in their next attempt:

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