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| Change T-Shirts by Sporkbender |
| Δy/Δx ... a change you can definitely believe in! (Ask your nearest Calculus teacher to learn more). |
| Related Searches: science, geek, math, mathematics, calculus, algebra, geometry, delta, ratio, politics, change, obama, differential, derivation, derive, funny, parody, slope, engineering |
| This and many more science posters and geek prints, click on any poster to view more info. |
Wednesday 25 July 2012
Change T-Shirts
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