This is a set of 28 I Have Who Has cards to practice calculating elapsed time. Each card has one time question which leads to the next card. The cards include quarter 'til, quarter after, half hours, hours, minutes, AM/PM, midnight, noon, and combinations of these. There is one answer key included. The cards are positioned four to a page for easy cutting. Plus, you can laminate them or use plastic protectors to make them last longer. Great for centers or a quick lesson! Students love to play and can create a great review for this skill!