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Bailey Caviness and Peyton McMurray stand next to their invention, the Inside Pitching Mat.

For two days this week, the Northstar Elementary gym took on the feeling of a World's Fair. 

On Monday, third grade students had their opportunity to showcase their inventions at their Invent, Iowa competition. This morning was the fourth grade's turn. 

Look for more photos and more on the students' inventions in the Jan. 13 Journal-Express. 

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