Item of the Week

Item of the Week

This week’s Item of the Week is the Becker Bottles “One in a Million.”  This teaching tool helps students visualize what 100,000, 10,000, 1,000, 100, 10, and 1 parts per million (ppm) looks like. Yellow and red beads, which illustrate 100,000 and 10,000 ppm are easy to find, whereas white, pink, green, and black beads, which illustrate 1,000, 100, 10, and 1 ppm respectively can be very difficult to find.  If you are teaching molecular concentration, the Becker Bottles “One in a Million”  is a great way to to visually demonstrate this concept to your students, and don’t forget, you can borrow these teaching tools for free at our STEM Resource Center (siuestemcenter.myturn.com).