Day 5: Volume Units
Volume is used to answer the question "How much is there?" Although it can be measured in cubic inches, cubic feet and cubic yards, it is commonly measured in ounces, cups, pints, quarts and gallons in English units and milliliters, and liters in metric.
Cubic wooden blocks work great for introducing the concept of volume as they can simply be counted to determine volume.
The act of pouring and counting gets the entire body involved in the math. I was once told that the more senses involved in an activity, the better it is remembered.