The main idea is the students choose a number between 0 and 100, exploring both its mathematical and real-world significance. A great way to extend studies of even and odd numbers, factors and GCF, multiples and LCM, primes, composites, prime factorization, etc. Also great for making math real, accessible, and interesting! We intend motivate and engage students in their own learning, arousing their curiosity, research capacity, collaborative spirit, consolidating mathematical knowledge, increasing English vocabulary and using ICT tools.