Real elements embedded in acrylic: The acrylic Periodic Table of Chemical Elements contains 83 samples of real elements. All samples and artwork are cast into acrylic, which shows the real elements embedded in it more threedimensionally and clearly, instead of surface printing. Note: Some elements have been excluded due to their radioactivity and rarity. Threelayer, construction: The Periodic Table is made of three layers of acrylic, which is clearly printed, safe and odourless. Compared with most twolayer acrylics on the market, it is more stable, not easy to be damaged, and more clear and translucent, so you can observe the elements clearly. It is durable and not easy to break. Educational value: The real periodic table of elements can improve students' learning interest and efficiency, and make them fall in love with chemistry and related sciences. Meanwhile, it is also a practical teaching tool that helps teachers to show the chemical elements clearly in the classroom. Size, weight and finish: Suitable size (6.0 X 4.5 X 0.8 inches) allows you to have a clear understanding of the different elements in the acrylic table, and it weighs only 1.2 lbs for . Each edge of the Periodic Table of Elements is smooth to prevent scratching your skin. Use scenarios: Ideal for classroom demonstrations and lessons, home study and science projects, and displaying in science fairs or on your desk to enhance curiosity and engagement.