Fraction Butterfly Anchor Chart - cross multiply to find equivalent fractions to compare fractions or add & subtract fractions with different denominators. A visual reminder of the strategy for adding & subtracting fractions found in the CCSS 5.NF.A.1 (a/b + c/d = (ad + bc)/bd). See http://www.corestandards.org/Math/Content/5/NF/A/1/. This is not intended to be taught on its own, but can serve as a reminder after the concepts that explain why this works have been taught.
These are very basic division strategies designed to introduce the concept. These Division Strategies are strategies that allow students to think differently and learn to manipulate numbers in ways that allow them to feel like they are in control of numbers.