This math packet is aligned with Common Core math fluency standards for first and second graders. It includes over 20 "minute math" assessments designed to build addition fact fluency for the basic math facts from sums ranging from 1-20. Assessments are designed to be given in a one minute time frame and students can progress through all 21 levels upon individual mastery. GREAT for differentiation! Included is a skills tracking chart for student data as well. Just pass out each student's level and set the timer! Quick and easy!