Equilateral Prism, Material: acrylic, Refractive index close to optical glass, can produce a rainbow from a non-monochromatic light source such as sun light, Perfect for student use, which will not break or chip like glass, is a softer material, Size: 50mm length, 25mm face size
Food Microbe Hunter, Students determine factors that affect microbe growth in food by designing experiments to control intrinsic and extrinsic factor, predict the probability of growth and prove it. 4 activites plus STEM extensions. Paddles supplied for the first two activities
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