# Number theory

OMG! 73.73 is the best number!!! Oh these guys...got to love them!

Venn Diagram to Classify Numbers I really needed this on my last Math test...

https://en.wikipedia.org/wiki/Number_theory

Introduction to Number Theory Learn the fundamentals of number theory from former MATHCOUNTS, AHSME, and AIME perfect scorer Mathew Crawford. Topics covered in the book include primes & composites, multiples & divisors, prime factorization and its uses, base numbers, modular arithmetic, divisibility rules, linear congruences, how to develop number sense, and much more.

This math unit on number theory has it all: Definitions Divisibility Rules Prime or Composite Factors Prime Factorization Greatest Common Factor (2 methods!) Least Common Multiple Practice and Enrichment Sheets

Multiplication by Infinity: Number Theory meets Fractals meets Probability This comes from one of the BEST VOTED PHYSICS BLOGS. Top 50.

Wow what an amazing idea to teach the history of the atom to students with learning difficulties. Not only the atom but this method of teaching can be applied to any number of teaching topics. I've also incorporated this activity into my Atomic Theory Lesson, link in the article.

A little number theory makes the times table a thing of beauty

Now how often do you see stand up comedians who know about number theory? I thought this was pretty funny

Roomalaiset numerot. Antwoorden van rekenen opschrijven in romeinse getallen

The Wolfram Problem Generator helps students solve practice problems with clear step-by-step directions. To use you need to have a Wolfram Alpha Pro account; try free trial before subscription. Pick from six main topics — arithmetic, number theory, algebra, calculus, linear algebra, and statistics. The topics follow Common Core Standards and can be customized according to the grade level. Lessons are available in varying difficulty levels for all ages…from elementary to college.

A little number theory makes the times table a thing of beauty

Formula sheet - Geometry

equivalent fractions

6-8 year olds 1.3 order and compare rational numbers 1.5 number theory concepts (e.g., primes, composites, factors, divisibility ,and multiples) in mathematical problem situations