I liked that I found new ones. I only had some old ones that I found in a rudimentary science lab. I used them to illustrate the refraction of light and the students thought they were "cool".
π Density Cube Block for Specimen Analysis
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6Pcs Lime2018 Parallel Battery Holder
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KISSTAKER Removable Heart Visceral Educational Parts
π Laminated Anatomical Pack for Skeleton Ligaments
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