The teacher demonstrates at the front of the class how to cut a cake in half, quarters, and thirds on the blackboard. The teacher will then cut a piece of cake, eat it, and ask the children how much of the cake was eaten.
In this game, simple wooden blocks (sections of circle that emulate cake) are put together to see how fractions add to and combine. For example, a teacher can demonstrate that when they put two halves together, it looks like a whole cake.
This game involves the use of wooden blocks (emulating cake) which have been cut into halves, quarters and thirds. The students are asked to line up the wooden blocks based upon their size. This teaches students the relative size of different fractions, which is a requirement for fourth-grade math.
This is a more advanced group activity where four students stand in a circle and oranges are handed out to the students. Each student is given a different number of oranges. The students each take a turn to say what fraction of oranges they have of the entire group. To do this, the students are asked to first count all of the oranges in the circle (say, 9), and then to count the number they have in their hands (say, 3). They then can see they have "three out of nine" oranges, or 1/3.