Replacement Sand, set is a refill of the sand included with the Tectonics model. Set includes one pound each of beige, black, blue, orange and yellow sand
Molecular Geometry Set (VSEPR), Five universal VSEPR models allows the student to build linear, planar triangular, tetrahedral, trigonal bipyramidal, octahedral structures, When Student builds the molecules over a white paper and white links it can be easily visualized
Patella (knee cap), Model, Human Bone, Pastic, These individual bones are a great addition to you collection, used as a match for your existing Eisco disarticulated skeleton, or to allow students to compare general skeletal structure
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