You asked for them, and here they are! Design challenges for any occasion! With these 13 rugged challenge cards printed on heavy card stock you can have an instant activity for your summer camp, classroom, homeschool, afterschool program, scout troop, or bible school. These cards were created by our in house staff of experienced STEAM Educators to create an educational, creative, and engaging activity. Perfect for groups or individuals. Each challenge card asks to participant to make something from Lux Blox and then to explain their creation. For ages 6 and up. Dimensions 4.25" x 5.5". Comes in a translucent envelope for convenient storage. **This product currently only ships within the United States. To inquire about international shipping, please contact products@whymaker.com