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Erica Posthuma @eposthuma

HS Chem Teacher, #AMTA, ACS Fellow & Associate Editor for ChemEdX. #modchem #sbg 👩🏻‍🔬she/her

Joined March 2009
  • Tweets 9,239
  • Following 731
  • Followers 2,097
Photos and videos
One of my students made this template for everyone in our class ❤️ #ochem #chemed
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One of my O chem students used @molview to create art with molecules
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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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Check out these new updates from AP Teach and ChemEd X! bit.ly/APTNSX
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Happy National Chemistry Week! Check out this new post from @pchemstud tinyurl.com/3ycrf96y

Picture Perfect Chemistry

Josh Kenney, Melissa Hemling, and I just published an article in the October 2024 Journal of Chemical Education. The article describes inquiry-based activities that highlight the chemistry behind...

chemedx.org
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I love the #CER #chemEd community with Al D Hyde and the Keytones at #BCCE2024
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When #APChemistry royalty takes the dance floor. ❤️ @AmandaHoran8 @mrfarabaugh
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Found this gem at #bcce24
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Modeling at #bcce2024 How many electrons are present in the air?
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Amazing class today with Dr Greg Smith at @NewfieldsToday on the interface of art and science
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Hot dog heaven, south Florida. Saw it and knew @KarenKilgariff needed to see this.
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One of my students created this work of art.
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Erica Posthuma retweeted
ChemEd Xchange
@ChemEdX
30 Jan 2024
Have a 3D printer? Make some 3D printed models of various carbon allotropes! bit.ly/3DmodL
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Erica Posthuma retweeted
ChemEd Xchange
@ChemEdX
18 Dec 2023
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

Colour Changes with Caffeine

Co-Authored by Iain A. Smellie*, Alexandra G. Armitage*, Iain L. J. Patterson*, Renald Schaub*

chemedx.org
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My student has thoughts on Maxwell-Boltzmann distributions.
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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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Erica Posthuma retweeted
Amy Roediger☮️@AmyRoediger
31 Jul 2023
When the chemistry teacher gets room 602 #IYKYK
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New laptop sticker #ssdgm
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Erica Posthuma retweeted
Ariel Serkin@aserkin
29 Jun 2023
I'm trying to resign the nail lab that I do (iron nails & CuCl₂) that examines single replacement rxns & develop empirical formula to be more sustainable and less toxic. Any ideas? #iteachchem @ChemEdXpert
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