Is it a run-on sentence?
Break down that complex sentence!
Fix that sentence!
100

I went to the park I saw my friend.     

YES

Bonus: fix it

I went to the park. I saw my friend.

I went to the park and I saw my friend.      

100

A thirsty goat came by after the fox had been in the well.

A thirsty goat came by 

after the fox had been in the well.

100

We swim code race in camp.

We swim, code, and race in camp.

200

The cat is sleeping on the bed.     

No

200

Even though it is 40 degrees outside, there are many people having a picnic outside.

Even though it is 40 degrees outside, 

there are many people having a picnic outside.

200

School lunch is gross it is mostly pureed food.

BONUS: Extra points for fixing the sentence more than one way. 

School lunch is gross. It is mostly pureed food.

School lunch, which is mostly pureed food, is gross.

300

We played soccer it was so fun.     

YES

Bonus: Fix it

We played soccer and it was so fun.

We played soccer. It was so fun.      

300

A Fox that had been caught in a trap, succeeded at last in getting away.

A Fox succeeded at last in getting away.

...that had been caught in a trap,

300

Find a friend observe all find the kindest

Find a friend, observe all, and find the kindest.

400

She made a sandwich but it fell down. 

NO

400

After he had been in the well a long time, a thirsty Goat came by.

After he had been in the well a long time,

a thirsty Goat came by.

400

The bell rang we lined up we went to lunch.

The bell rang so we lined up and we went to lunch.

The bell rang. We lined up. We went to lunch.

500

My dad cooked dinner we ate it together. 

YES

Bonus: fix it

My dad cooked dinner and we ate it together. 

My dad cooked dinner. We ate it together.   

500

A fox fell into a well and though it was not very deep, he found that he could not get out again.

A fox fell into a well 

and though it was not very deep, 

he found that he could not get out again.

500

The book was really interesting it had dragons and magic the main character was very brave and he had to save his village.

The book was really interesting because it had dragons and magic. The main character was very brave and he had to save his village.

The book was really interesting. It had dragons and magic. The main character was very brave and he had to save his village.