
Robert Kaplinsky
@robertkaplinsky
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Math educator. ❤️ teachers. @openmiddle co-founder. #OpenMiddleBook author. #ObserveMe creator. @GrassrootsWS President. Get my emails: https://t.co/9CQIavz7yD
Lakewood, CA
Joined August 2012
Test your 7th graders' understandings of converting fractions to repeating decimals with this @openmiddle problem from @danluevanos.
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Which @MichaelsStores coupon will save you more money today? 30% off entire purchase or 40% off one item? .
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Do you teach factoring quadratics? Try out this @openmiddle problem with your students. What do you think they'll say are the largest and smallest integers?
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How are your third graders when it comes to operations with time? This @openmiddle problem challenges students to make the latest possible time.
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I'm a huge fan of the research around #growthmindset, but there is one part that I'd like to explore: do you really learn from mistakes that you're not aware of? .
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I love @heather_kohn's teacher moves where she reflects on how she got kids engaged in a single graph for 45 min. #iteachmath
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This fifth grade problem on the volume of a rectangular prism from @JSchwartz10a will your students thinking more deeply. See the hints and answers on @openmiddle at:
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You may have taken your coins to a @coinstar machine, but here's a lesson to help elementary students figure out how much money they should be getting.
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Are you looking to see whether your sixth graders really understand one-step equations? Try out these two @openmiddle problems with them: .
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This single 5th grade @openmiddle problem on decimal multiplication can easily replace an entire worksheet. except that kids will love doing this and fight each other to get the closest answer.
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