Khan Academy
Khan Academy: Add Fractions With Unlike Denominators
Practice adding fractions that have different denominators. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Math Aids
Math Aids: Number Line Worksheets
Great resource for learning and practicing number lines. Math worksheets are printable, may be customized, and include answer keys.
Quia
Quia: Equivalent Fractions
Use this Web site to practice finding equivalent fractions using a matching game format. CCSS.Math.Content.3.NF.A.3.a Understand two fractions as equivalent (equal) if they are the same size, or the same point on a number line.
Fun Brain
Fun Brain: Fraction Soccer
Compete in a soccer shootout by adding, subtracting, multiplying, and dividing fractions. Score goals for your team and block your opponent's shots by answering correctly.