Marina Aqua-Glo Showcase incandescent bulbs provide long-lasting illumination for a wide variety of aquarium settings. The screw-on bulbs have an aqua blue coated finish and fit standard size light fixtures. 1 bul
Density Lava Lamp Kit, Includes: 5 Plastic bottles, 1L Vegetable Oil, 25ml Food Coloring, 10 Alka Seltzer tablets, Help to visualize and understand density and introduce the idea of polarity as well with this demonstration for the whole classroom, For grades 2-5