Children can make and divide imaginary pizzas with toppings of their choice. Put kindergartners into groups of two or three, and give each group a circle with lines dividing it into two or three "pizza parts" (one part for each child). Give the group crayons to draw toppings on the pizza. The children can spend a few minutes talking to their other group members about their three favorite pizza toppings (cheese, sauce, pepperoni, mushrooms, etc.). Children can then draw their three favorite toppings on their section of the pizza. Go around to each group and ask how many sections of the pizza have cheese, how many sections have sauce, etc.
Divide different colored candy into bags so that each bag has a small even number of candies (20 to 30). Divide kids into groups of four to six and give each group a bag. Have each group count out the total number of candies in the bag and write down the number. Then have each group count the number of different colors of candies (e.g. 6 red candies, 7 blue candies and so on), and write down each of these totals. Go around to each group and show children that, for example, if there are a total of 30 candies and 6 are red, then 6/30 of the candies are red. Do this for each color in the bag, then let the kids eat the candy.
Give each child a piece of paper. Tell the children that the piece of paper is whole. Ask children to fold the paper in half. Tell children that the paper is now one half the size of the whole piece of paper, and that two halves are the same as one whole. Let them unfold the paper to see that two halves are the same size as the whole paper.
Ask students how many total students there are in the classroom. Let them count themselves. Write the number of students on the board. Think of a survey category, such as favorite animal. Ask children to raise their hands and tell you their favorite animals. After four children tell you the favorite animal, write the four animals on the board (e.g. dog, cat, bunny, dinosaur). Then survey the class to ask each child which of the four animals they like best, allowing them each only one vote. Write down the results next to each animal. Report the survey results in fraction form: if there are 24 kindergartners in class, and 14 like dogs best, point out that 14/24 of the class prefers dogs. If 8 like cats best, report that 8/24 like cats best.