A highly engaging math project! Always a big hit in my classroom! Students choose a number between 10 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 factorizations, etc. Also great for making math real, accessible, and interesting! Now includes a grading rubric based upon the Standards Based Grading system (or the Four-Point, A-F scale). Appropriate for third through eighth grade.