This set corresponds with our Camping 10 Frame Counting Mats (1-10). This set includes 2 camping designs, 3 frame options (pictures and numbers, pictures without numbers, and no pictures with numbers) number cards 11-20, a subtraction and an addition worksheet for numbers 11-20. Our store also carries a bundle set 1-20 at a discounted price. This math activity aligns with Common Core. Looking for more Camping activities? We also carry a Camping Day Theme Day Mini Unit full of lots of fun activities.