These are beautifully illustrated cards with bright and colorful images for your student to count and become proficient in subitization, or counting a group of objects with out really counting, just use sight to demise how many. This is a taught skill that improves with practice. Use these every day, to start just show the card and say the denomination, or how many. As you use them more frequently your student will start to see the amount and deduce the correct number by sight.