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SAT: Problem of the Day

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The Lemma Difference

Pedagogy

  • Curates content generated by top-tier educators

  • Functions entirely online through many devices

  • Utilizes a unique approach to learning

Non-linear Learning

  • Guides you through your personal learning path

  • Determines paths based on past performance and personal preferences

  • Suggests content you should focus on

Data Driven

  • Analyzes data to assess student progress and determine level of understanding

  • Informs students of their strengths and weaknesses

  • Allows parents and educators to make impactful and target interventions when needed

More than just video lessons

  • Integrated social messaging between students.
  • Ask questions directly to authors and educators.
  • Annotations to reference material and related content

Problems/exercises built in

  • Intuitive answer inputs: enter rich input not computer language
  • Automated grading: know instantly if you are on the right track
  • Refreshable: try different versions of a problem

Testimonials

The care in presenting the material is the reflection of the beauty and enchantment of determinats, linear algebra and tensor calculus. Prof Grinfeld is awakening us to the majesty of this subject. Thank you.
George
I think this is one of the best and most intuitive introduction I’ve seen on eigenvalues and eigenvectors! Thank you!!
Albert
I am a 19 year old physics student from the US. Thanks for providing an intuitive and world-class math education for those who cant afford it. Thank you so much.
Alexander
It is a great course and all so far. I like how you are making great effort to introduce concepts in a manner that allow for internalising of larger ideas rather than rote memorisation. This is the way I would advocate all tuition be done...
Hythoday
Mr Grinfeld, your videos are amazing.
Avi
Lemma is a phenomenal system. Not only has it taught me the material, but it allowed me to practice problems relevant to the material over and over again until in made sense.
Katrina
Reviewing the lecture with pleasure, as if listening to a piece of any famous composer
Ricardo
Now I get it!!!!
Keith
thank you so much for these wonderful lectures, truly inspiring, thanks to you and Gilbert Strang I love linear algebra.
Muthuvel
Thank you. You do an amazing job of clarifying this subject. Special thanks for not wrapping the big picture in fatiguing notation.
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