This kit is ideal for teaching students how to make measurements in the metric system and then apply those measurements to determine density using the formula Density = Mass/Volume. Includes activity guide.IncludesMetric RulerAluminum Bar 76 x 25 x 6 millimetersAluminum Cubes 13 millimeters (2)Steel Sphere 13 millimetersGlass Sphere 13 millimeters Shipping Details Shipping Type: parcel Free Shipping: true Specifications Maximum Age: None Maximum Grade Level: None Allergens: Contains No Allergens Certifications: Not Applicable Grade Level: Grades 5-12 SUOM Description: Each Age Range: 12 and Up Brand Name: United Scientific Description: Density Kit