In 6th Grade geometry, one of the concepts is finding the volume of rectangular prisms with fractional cubes. The teachers can use "Find volume of a rectangular prism with fractional cubes Quiz" to test students' understanding of this concept. Students need to find the volume of a rectangular prism and the volume of a cube, then they should divide the volume of a rectangular prism by the volume of a cube to find the number of cubes to fit in. For example, if the dimensions of a rectangular prism are 6 cm, 5 cm, and 2 cm, and the side length of a cube is ⅓ cm, then the volume of a rectangular prism is 6*5*2=60 cm^3 and the volume of a cube is ⅓ *⅓ *⅓ = 1/27 cm^3. Therefore, the number of cubes that are needed to completely fill the right rectangular prism is 60 ÷ 1/27 = 1620.