Introduce the concept of fractions to your class by having a pizza party. Have enough pies so that each student can get one slice. Ask the students how many people are able to share a pie and what portion of the pie each person gets. Discuss the concept of one-eighth with the class. After they eat their first slice of pizza, you might want to bring out a second round of pizza and ask students how they could divide it into even more slices.
Provide the students with pieces of construction paper. Have them fold it in half and then color one half of the paper. Explain how this demonstrates the fraction one-half. Walk them through a couple of more fractions, such as one-quarter and one-sixteenth. After they complete the task for these fractions, ask them to create pieces of paper that represent the fractions one-eighth, one-tenth and one-twelfth. Display them on a board in the front of the classroom.
Have the students take a piece of paper that is labeled as one-half. Have them take another piece of paper and fold it into fourths. Have them color two of those fourths. Ask them if there is more paper colored in on the one-half or two-quarters page. Explain to them that they have created equivalent fractions. Put the students into small groups and ask each group to create a set of five equivalent fractions.
Take your students to the school's computer lab. Allow them to work in pairs or groups if there are not enough computers to accommodate each of the students. Let them visit Gamequarium (at gamequarium.com) for a plethora of different games involving fractions. They could entertain themselves with "Tony's Fraction Pizza Shop" or "Clara Fraction's Ice Cream Shop" for practice with fractions. Or they could also play games where they have to compare fractions with like and unlike denominators.