Click on a section to select or deselect the section.

Click Add Whole Unit to increase the number of whole sections. The number of whole units updates automatically. The fraction bars clear.

Click Remove Whole Unit to decrease the number of whole sections. The number of whole units updates automatically. The fraction bars clear.

Click Add Part of a Whole to increase the number of parts in a whole section. The number of parts of a whole updates automatically. The fraction bars clear. Click on a section to select or deselect the section.

Click Remove Part of a Whole to decrease the number of parts in a whole section. The number of parts of a whole updates automatically. The fraction bars clear.

Click Reset to clear the input fields and return the fraction bar to one whole section.