The document discusses key concepts about fractions for 6th grade mathematics:
1) Fractions are used to describe ratios and proportional relationships involving numbers, geometry, measurement, probability, and adding/subtracting decimals and fractions.
2) Students will learn to generate equivalent forms of rational numbers including whole numbers, fractions, and decimals.
3) The document provides information on what a fraction is, how to add and subtract fractions with like denominators using visual models and step-by-step procedures, and includes interactive online activities for students to practice these skills.