To add fractions, like 1/2 and 1/3, model each fraction using rods. Find a common denominator by creating a train of red rods and a train of light-green rods until both trains have the same length. The trains have the same length when they are 6 units long, so 6 is a common denominator. Using the common denominator, the fractions 1/2 and 1/3 can be expressed as equivalent fractions 3/6 and 2/6. Because the denominator represents the number of equal parts in a whole and the numerator represents the parts in the quantity, add the numerators together. There are 5 parts in total, so 1/2 + 1/3 equals 5/6.
Adding Fractions using the Brainingcamp Cuisenaire® Rods virtual manipulative.
Brainingcamp virtual manipulatives can be used anywhere with no setup, cleanup, or lost parts. They are highly effective at engaging today’s digital learners and helping them bringing abstract math concepts to life.
Brainingcamp produces virtual manipulatives for iPads, Chromebooks, PCs, and Macs.