Calcul de l'Aire, Rayon, Diamètre & Circonférence French Boom Cartes™ Our activity deck is perfect for students to learn the concept of calculating the area, radius, diameter, and circumference of the circle. Our fun and interactive task cards are extremely loved by the students. This deck is ideal for students as they will engage themselves. Boom Card activity deck will have 67 different cards and are well designed to reinforce the student’s knowledge in a fun and interactive way. It will