Erica Posthuma
9.2K posts

Erica Posthuma
@eposthuma
HS Chem Teacher, #AMTA, ACS Fellow & Associate Editor for ChemEdX. #modchem #sbg 👩🏻🔬she/her
Indianapolis, IN เข้าร่วม Mart 2009
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Chemistry educators have been using Johnstone's Triangle for decades when designing lessons - learn about this new update to the triangle in the article from Nina Hike. bit.ly/SJSNGS

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Incorporating Indigenous Perspectives with Chemistry Lessons - an article by Yvonne Clifford
bit.ly/PCC24X

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Happy National Chemistry Week! Check out this new post from @pchemstud tinyurl.com/3ycrf96y
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Amazing class today with Dr Greg Smith at @NewfieldsToday on the interface of art and science

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Erica Posthuma รีทวีตแล้ว

Erica Posthuma รีทวีตแล้ว

This initial study outlines the effect on the colour of anthocyanin-containing solutions when mixed with caffeine. There is great potential for series of open-ended experiments for students to investigate. bit.ly/Caff23
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When the sales clerk from @lecreuset knows you have an obsession with their cookware so she calls you when they get new merchandise… 🧡💙💛❤️

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@aserkin @FlinnScientific Not sure what @FlinnScientific will say but I don’t use their supplies for consumption bc it isn’t food grade. Oddly enough our art department had a supplier.
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Does anyone know if lab grade CaCl₂, citric acid, or sodium alginate etc would also be good safe from a place like @FlinnScientific (assuming new container of course). #foodchem
I’m thinking of sourcing supplies that are easier for public schools to purchase
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Erica Posthuma รีทวีตแล้ว











