Taking teaching math ratios to a higher level involves comparing multiple subsets of a larger group, then comparing those subsets to other subsets. Using a sweet treat, such as jelly beans, is one way to inspire students to participate in the lesson.
Large bags of mixed jelly bean become a teaching tool. The various colors are easily divided and the few that disappear from the quick sneaking bite can be used to your advantage.
Begin by dividing the class into small groups. Pour an uncounted amount of various colored jelly beans into a bowl for each group. The groups begins by counting the entire contents of the bowl. Remind them that this is their base number for their initial ratios.
The groups then divide the jelly beans by color. Instruct the class to create ratios for each color verses the total number.
When they have successfully completed this portion of the task, invite the group to have one or two jelly beans to eat. Then instruct the groups to combine into larger groups. Repeat the process of counting and dividing. See if they can figure out the ratio of the amount eaten to the new total number.
Fun teaching ideas can be as simplistic as playing with food. Use this basis to create a foundation for future learning.