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![Stability First: A new order to teach predicting reactions](https://static.wixstatic.com/media/2393f9_6da3d258e8994daf9a72927a697e0128~mv2.jpg/v1/fill/w_454,h_341,fp_0.50_0.50,q_90,enc_auto/2393f9_6da3d258e8994daf9a72927a697e0128~mv2.webp)
Brennan Koch
15 minutes ago3 min read
Stability First: A new order to teach predicting reactions
Predicting the products of chemical reactions and then balancing those same reactions can be intimidating for grade-level chemistry...
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![Teaching double displacement reactions with the Lost Labels Lab](https://static.wixstatic.com/media/2393f9_78f7052ce8f94f31baa6eb299f1ab325~mv2.jpg/v1/fill/w_454,h_341,fp_0.50_0.50,q_90,enc_auto/2393f9_78f7052ce8f94f31baa6eb299f1ab325~mv2.webp)
Brennan Koch
Jan 314 min read
Teaching double displacement reactions with the Lost Labels Lab
“We actually did real chemistry!” That was a quote from a girl in yesterday’s lab. She actually did real chemistry. And what a feeling...
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![Use this inquiry lab to intro single displacement reactions](https://static.wixstatic.com/media/2393f9_a98480f7f3624cbfac70636e63d6a678~mv2.jpg/v1/fill/w_454,h_341,fp_0.50_0.50,q_90,enc_auto/2393f9_a98480f7f3624cbfac70636e63d6a678~mv2.webp)
Brennan Koch
Jan 244 min read
Use this inquiry lab to intro single displacement reactions
Sometimes it just all works out right. The timing of the lessons and the timing of a lab. This year, I introduced a simple new lab...
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![5 Traps in naming compounds and how to avoid them](https://static.wixstatic.com/media/2393f9_8479fe53c054499683cf36495b29c59b~mv2.jpg/v1/fill/w_454,h_341,fp_0.50_0.50,q_90,enc_auto/2393f9_8479fe53c054499683cf36495b29c59b~mv2.webp)
Brennan Koch
Jan 174 min read
5 Traps in naming compounds and how to avoid them
Chemistry can feel dangerous to a student. There are so many pitfalls that you and I so easily avoid, and yet the students repeatedly...
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![Try this progression to teach ionic formulas](https://static.wixstatic.com/media/2393f9_aac75c86ba164da1b183a586e0893b95~mv2.png/v1/fill/w_243,h_113,fp_0.50_0.50,q_95,enc_auto/2393f9_aac75c86ba164da1b183a586e0893b95~mv2.webp)
Brennan Koch
Jan 105 min read
Try this progression to teach ionic formulas
Progressions are important. If I dove straight into a max effort weight training and health kick, I would get disappointed in the...
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![Do kids pay attention in lab? Use a lab final. Here is mine from 2024](https://static.wixstatic.com/media/2393f9_a78ff2c0b0204a84b6a845f5b1c83ccf~mv2.jpg/v1/fill/w_454,h_341,fp_0.50_0.50,q_90,enc_auto/2393f9_a78ff2c0b0204a84b6a845f5b1c83ccf~mv2.webp)
Brennan Koch
Dec 13, 20244 min read
Do kids pay attention in lab? Use a lab final. Here is mine from 2024
Something wonderful happened yesterday. My room was full at lunch. I mean really full. And all of them were helping each other to...
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![Building in buy-in to chemistry](https://static.wixstatic.com/media/2393f9_9d03a9d9ecd14639a6cfe8fc6a405435~mv2.jpg/v1/fill/w_454,h_341,fp_0.50_0.50,q_90,enc_auto/2393f9_9d03a9d9ecd14639a6cfe8fc6a405435~mv2.webp)
Brennan Koch
Dec 6, 20243 min read
Building in buy-in to chemistry
Something beautiful happened in the last test of the semester. Less kids failed. I mean a lot less. And it wasn’t an easy test. In...
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![How to go down the rabbit hole but not waste time](https://static.wixstatic.com/media/2393f9_2e3dfa7ada6b488da6eb5189bb9b66af~mv2.jpg/v1/fill/w_454,h_341,fp_0.50_0.50,q_90,enc_auto/2393f9_2e3dfa7ada6b488da6eb5189bb9b66af~mv2.webp)
Brennan Koch
Nov 22, 20245 min read
How to go down the rabbit hole but not waste time
We are teachers. We like to know that we know stuff. Kids think that we know stuff. If you wear your lab coat out of the room,...
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![Make a buffer, test a buffer lab](https://static.wixstatic.com/media/2393f9_2f88f89ff278476e87435d074e4bc7d2~mv2.jpg/v1/fill/w_454,h_341,fp_0.50_0.50,q_90,enc_auto/2393f9_2f88f89ff278476e87435d074e4bc7d2~mv2.webp)
Brennan Koch
Nov 8, 20242 min read
Make a buffer, test a buffer lab
Sometimes the simplest ideas actually work. Shocking, I know. Having just taught about the idea of buffers, I felt like the students...
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![A simple way to teach the inverse relation of wavelength and frequency in photons.](https://static.wixstatic.com/media/2393f9_27aad59c674048a8842e4a678dbd45bb~mv2.jpg/v1/fill/w_454,h_341,fp_0.50_0.50,q_90,enc_auto/2393f9_27aad59c674048a8842e4a678dbd45bb~mv2.webp)
Brennan Koch
Oct 25, 20242 min read
A simple way to teach the inverse relation of wavelength and frequency in photons.
There are many ways to teach the inverse relationship between wavelength and frequency of photons. Videos. Slinkies. But I think this...
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![Teach electron configuration with Battleship!](https://static.wixstatic.com/media/2393f9_b769c6d3cd6149d2b104c6eaec54aed7~mv2.jpg/v1/fill/w_454,h_341,fp_0.50_0.50,q_90,enc_auto/2393f9_b769c6d3cd6149d2b104c6eaec54aed7~mv2.webp)
Brennan Koch
Oct 18, 20243 min read
Teach electron configuration with Battleship!
The electron configuration unit can get a little dry. Electron configuration is a tough unit for highly connected labs. Try using this...
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![How dog training can help you become a better chemistry teacher](https://static.wixstatic.com/media/2393f9_cc901c05a411434f980ba14a0ced5dbb~mv2.jpg/v1/fill/w_454,h_341,fp_0.50_0.50,q_90,enc_auto/2393f9_cc901c05a411434f980ba14a0ced5dbb~mv2.webp)
Brennan Koch
Oct 4, 20244 min read
How dog training can help you become a better chemistry teacher
I was listening to a bird hunting podcast about how to train your bird dog, and I realized that they might as well have been talking...
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![Use chemistry tests for growth, not punishment](https://static.wixstatic.com/media/2393f9_7367503038a74c22bbfa01cf701c37ed~mv2.jpg/v1/fill/w_454,h_341,fp_0.50_0.50,q_90,enc_auto/2393f9_7367503038a74c22bbfa01cf701c37ed~mv2.webp)
Brennan Koch
Sep 27, 20244 min read
Use chemistry tests for growth, not punishment
Tests used to be punitive. I wielded them like a weapon, seeking out those who were underprepared and chopping them down like the...
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![Introduce equilibrium with less mess and less headache.](https://static.wixstatic.com/media/2393f9_656c56c648c6462891610263da4ef1b5~mv2.jpg/v1/fill/w_454,h_341,fp_0.50_0.50,q_90,enc_auto/2393f9_656c56c648c6462891610263da4ef1b5~mv2.webp)
Brennan Koch
Sep 20, 20244 min read
Introduce equilibrium with less mess and less headache.
The first time hearing about equilibrium can be confusing for students. That’s why there are so many ways to introduce it. Many are...
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![Assess more. Grade less.](https://static.wixstatic.com/media/2393f9_8bd098f1bd424f67bdf711a4ceb22d8e~mv2.png/v1/fill/w_454,h_341,fp_0.50_0.50,q_95,enc_auto/2393f9_8bd098f1bd424f67bdf711a4ceb22d8e~mv2.webp)
Brennan Koch
Sep 13, 20244 min read
Assess more. Grade less.
You should assess more. You should grade less. Those two statements seem mutually exclusive, but they aren’t. The longer that I teach,...
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![Start teaching dimensional analysis with a puzzle instead of math.](https://static.wixstatic.com/media/2393f9_0e482be9752d4147a3638fae2892acc1~mv2.jpg/v1/fill/w_454,h_341,fp_0.50_0.50,q_90,enc_auto/2393f9_0e482be9752d4147a3638fae2892acc1~mv2.webp)
Brennan Koch
Sep 6, 20243 min read
Start teaching dimensional analysis with a puzzle instead of math.
Wish me luck. I start dimensional analysis today. For some (like many of us), it just makes sense. And for others (like many, many of...
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![A better way to use the exploding gummy bear demo.](https://static.wixstatic.com/media/2393f9_9441f28091f64627922e9a038e976760~mv2.png/v1/fill/w_454,h_341,fp_0.50_0.50,q_95,enc_auto/2393f9_9441f28091f64627922e9a038e976760~mv2.webp)
Brennan Koch
Aug 23, 20243 min read
A better way to use the exploding gummy bear demo.
Don’t you hate it when you see a cool demo, but have no place for it? That is the way I felt about the exploding gummy bear demo. It’s...
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![Use this demo to get students asking "How?"](https://static.wixstatic.com/media/2393f9_1b16d1107ba24778aee91679e594dafc~mv2.png/v1/fill/w_454,h_341,fp_0.50_0.50,q_95,enc_auto/2393f9_1b16d1107ba24778aee91679e594dafc~mv2.webp)
Brennan Koch
Aug 16, 20243 min read
Use this demo to get students asking "How?"
This could be the most important question for students to be asking in chemistry; “How?” At almost every level of chem, one of the...
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![What to do with AP Chem test scores (or any test score!)](https://static.wixstatic.com/media/2393f9_cf243828c97140178490cc6820c05bde~mv2.jpg/v1/fill/w_454,h_341,fp_0.50_0.50,q_90,enc_auto/2393f9_cf243828c97140178490cc6820c05bde~mv2.webp)
Brennan Koch
Jul 3, 20244 min read
What to do with AP Chem test scores (or any test score!)
It’s almost time. AP scores come out very soon. For some of us, it feels like Christmas slowly approaching. For others of us, it feels...
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![Teach the gas laws using the disposable water bottle lid launching demo](https://static.wixstatic.com/media/2393f9_2b4877d2464440cfb6b6930960674f29~mv2.jpg/v1/fill/w_454,h_341,fp_0.50_0.50,q_90,enc_auto/2393f9_2b4877d2464440cfb6b6930960674f29~mv2.webp)
Brennan Koch
May 3, 20244 min read
Teach the gas laws using the disposable water bottle lid launching demo
If you have taught as long as I have, you have lived through at least two really annoying disposable water bottle fads. Bottle...
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