Description This set of rectangular blocks includes aluminum, iron, and plastic pieces, designed for middle school physics experiments to compare the densities of different materials. The blocks are crafted with precision to ensure accurate measurements, making them ideal for educational purposes and hands-on learning in science classes. Features -Color:Assorted Color -Material:Aluminum Iron and Plastic -Size:5.00X2.00X1.00cm/1.97X0.79X0.39in -Size:4.00X2.00X1.00cm/1.57X0.79X0.39in -Size:3.00X2.00X1.00cm/1.18X0.79X0.39in -Accurate density measurement: this experimental apparatus provides precise measurements of different materials' densities, delivering highaccuracy data for reliable results -Easy density comparison: with this tool, comparing the densities of various substances becomes effortless, solving the challenge of density comparison -Wide application range: suitable for aluminum blocks, iron blocks, plastic blocks, and more, this product has a broad range of applications -Enhanced learning: this product helps students better understand the concept and principles of density, improving the effectiveness of experimental teaching -Versatile use: whether in school laboratories, research institutions, this apparatus provides accurate and reliable density comparison results for various scenariosPackage list: 9pcs/box density experimental equipment