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Mr Zrenner

@MrZrenner

building relationships and reasoning in our mastery-based thinking classroom.

 Ohio.
Joined November 2015
  • Tweets2.6K
  • Following208
  • Followers494
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Photo by Mr Zrenner (@MrZrenner)Photo by Mr Zrenner (@MrZrenner)Photo by Mr Zrenner (@MrZrenner)Photo by Mr Zrenner (@MrZrenner)Photo by Mr Zrenner (@MrZrenner)Photo by Mr Zrenner (@MrZrenner)Photo by Mr Zrenner (@MrZrenner)Photo by Mr Zrenner (@MrZrenner)Photo by Mr Zrenner (@MrZrenner)Photo by Mr Zrenner (@MrZrenner)
Post-Halloween candy swap! 🍫 making ratios to trade 🍬 converting 🎃 dimensional analysis
Image from Mr Zrenner (@MrZrenner)
Image from Mr Zrenner (@MrZrenner)
Image from Mr Zrenner (@MrZrenner)
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🎉 party animals!
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Students got to replicate a "meaningful flag" or "their initials" on @Desmos using linear equations and domain & range! 🇬🇷 💯
Image from Mr Zrenner (@MrZrenner)
Image from Mr Zrenner (@MrZrenner)
Image from Mr Zrenner (@MrZrenner)
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"Thanks for saving my life." -a former student, passing in the hallway, still wearing a bracelet from 3 years ago that's now unreadable Telling your personal story is important. Content can wait. Connections matter. #becauseisaidiwould
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We had 5 middle schoolers at @OFHSultimate frisbee practice today! Welcome to the club... 🥏Aizen 🥏Dylan 🥏Ezra 🥏Kayden 🥏Leo
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⚙️ gears + a painted TI-83! #QuantitativeReasoning @TICalculators
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Mr Zrenner retweeted
Dan Meyer (@ddmeyer) profile picture
Dan Meyer@ddmeyerSep 16
So s/o to the teachers and schools and parents who are committed everyday to maintaining lofty goals for children's social and mathematical learning, doing a lot with what little they have, unbothered by people who believe it is a great accomplishment to do less with less.
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Using my brother's homemade chicken coop to see how Pythagorean Theorem or the area of a triangle could have been used in the creation. 📐 #QuantitativeReasoning
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Tape measures, Pythagorean theorem, and cross-curricular work with @MrsJJonesOne science classes! 👩‍🌾 📐
Image from Mr Zrenner (@MrZrenner)
Image from Mr Zrenner (@MrZrenner)
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Today I learned... freshmen don't know what a "rebate" is. Hopefully, they know now!
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Flinging frisbees, doing math, and graphing statistics. 🥏🧮📊 No numbers from a book! Everything is our own data!
Image from Mr Zrenner (@MrZrenner)
Image from Mr Zrenner (@MrZrenner)
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Zoo tiger 🆚 Jungle tiger Talking about confidence, grit, struggle, and mentality in math class. And of course, I had to wear my Fred Flintstone tie to match! 🐯👔
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Day 2: wear a tie to match the activity. Coloring 1 to 100 by @saravdwerf is always a win for engagement, teamwork, and communication!
Image from Mr Zrenner (@MrZrenner)
Image from Mr Zrenner (@MrZrenner)
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#MarshmallowChallenge #QuantitativeReasoning 🏆 our tallest tower + some creative approaches + math shoes 👟
Image from Mr Zrenner (@MrZrenner)
Image from Mr Zrenner (@MrZrenner)
Image from Mr Zrenner (@MrZrenner)
Image from Mr Zrenner (@MrZrenner)
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☝️ First day + High 5 Friday 🖐️ The frosh asked for an encore of my Day Zero poem, then Mason beatboxed while I recited it again! 🎵
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I've been using a "green sheet" in math for years, because it was the color of our textbook. I had some new inspiration, so... Golden Ticket to success! 🎟️ Thanks @ChatGPT for the logo.
🤖 Made with AI
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Fireworks & Frisbees & Freedom Happy 4th!
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2 for .50 cents each?! I have a penny! @TheUFL, let me know if you're hiring. This math teacher could literally make you 100x the money, if you just knew decimals and units! #math
United Football League (@TheUFL) profile pictureUnited Football League
@TheUFLMay 22
50 Cent will be performing LIVE at the United Bowl Halftime Show in Washington, DC. For the next 50 hours: Buy 2 Tickets Get 2 for .50 cents EACH BUY NOW: bit.ly/3PC3NGw
Promotional image for 50 Cent’s halftime performance at the 2026 United Bowl, featuring bold text overlay and a powerful portrait.

ALT Promotional image for 50 Cent’s halftime performance at the 2026 United Bowl, featuring bold text overlay and a powerful portrait.

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To all the Frisbee moms, thanks for traveling to tournaments, showing up on the sidelines, and cheering for us! Hope you had the best day! 🥏🌼
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Did you know that Ireland’s capital city is growing at an exponential rate? ☘️ It’s Dublin. 🙏 Thanks to @Mr_Vas 😂
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