This includes 56 flashcards. These flashcards cover standard and metric capacity, mass and length conversions. They also include time, temperature and angle measurements/conversions. Also included are metric prefix flashcards and a few challenge flashcards. Front of flashcard has a unit of measure, an illustration and a question (i.e. How many cups in a pint?). The back has the answer. They are arranged four to a page. Each page has eight boxes with front and back of card side by side. I cut two boxes as one and fold then glue creating a card with answer on back. I made a master set for the classroom which I put on card stock paper then laminated. I also made a set for each student in my class (they can do cutting and folding). I give each student a red envelope and a green envelope labeled with name (each made simply from colored construction paper). As students practice, mastered cards go in green envelope, others go in red until mastered.