Sara mixed baking soda and vinegar and we watched what happened to the balloon!
Feel free to bring an experiment to demonstrate to the class.
When a word problem provides the number in a group & the amount in each group, and you are looking for how many in all (the total); you multiply.
When a word problem provides the total & the number of groups, and you are looking for the amount in each group; you divide.
When a word problem has the total & the amount in each group, and you are looking for the number of groups; you divide.