[color=#666666]Create a rectangular prism using the slide scales on the right. [br]Firstly, make a prism with the height of 1 unit cube. This is one layer.[br]With your partner identify the length and width of the layer. How many cubes is the volume of the prism. Explain your calculation. [br]Create another prism by adding a new layer onto your prism. [br][/color][color=#666666]What can you see about the relationship between the number of layers and the number in each layer, to the volume of yours prism. [br]Add more layers and calculate the volume.[/color]