A total of 15 extra thick, water resistant cards for sorting. Teach your child to learn about ways to improve our world.If you would like to order the complete cards instead, that are extra thick and water resistant, please email me at portaltrees@gmail.com.Given the freedom and support to question, to probe deeply, and to make connections, Montessori students become confident, enthusiastic, self-directed learners. They are able to think critically, work collaboratively, and act boldly—a skill