nrich.maths.org

• charset: utf-8
• name: Generator content: Drupal 10 (https://www.drupal.org)
• name: MobileOptimized content: width
• name: HandheldFriendly content: true
• name: viewport content: width=device-width, initial-scale=1.0

• Skip to main content
• http://nrich.maths.org/
• guidance and webinar recordings
• http://nrich.maths.org/teachers
• Early years
• Primary
• Secondary
• Post-16
• Professional development
• http://nrich.maths.org/students
• Primary
• Secondary
• Post-16
• http://nrich.maths.org/parents
• Early years
• Primary
• Secondary
• Post-16
• http://nrich.maths.org/problem-solving-schools
• What is the Problem-Solving Schools initiative?
• Becoming a Problem-Solving School
• Charter
• Hub
• Resources and PD
• Events
• About us
• Impact stories
• Support us
• Our funders
• Contact us
• Properties of numbers
• Place value and the number system
• Calculations and numerical methods
• Fractions, decimals, percentages, ratio and proportion
• Patterns, sequences and structure
• Coordinates, functions and graphs
• Algebraic expressions, equations and formulae
• Measuring and calculating with units
• Angles, polygons, and geometrical proof
• 3D geometry, shape and space
• Transformations and constructions
• Pythagoras and trigonometry
• Vectors and matrices
• Handling, processing and representing data
• Probability
• Thinking mathematically
• Mathematical mindsets
• Calculus
• Decision mathematics and combinatorics
• Advanced probability and statistics
• Mechanics
• Early years foundation stage
• Accept All Cookies
• http://nrich.maths.org/15115
• http://nrich.maths.org/12631
• http://nrich.maths.org/8517
• http://nrich.maths.org/9088
• Sign up to our teacher newsletter
• Technical help
• Accessibility statement
• Contact us
• Terms and conditions
• Cookie details

• https://twitter.com/nrichmaths
• https://www.facebook.com/nrichmaths
• https://bsky.app/profile/nrichmaths.bsky.social
• Millennium Mathematics Project
• About our cookies

            Domain Name: MATHS.ORG
Registrar: Network Solutions, LLC
Domain Status: client transfer prohibited
Registry Expiry Date: 2028-03-18T05:00:00Z
Creation Date: 1997-03-17T05:00:00Z
Updated Date: 2025-04-29T15:25:02.818Z
Name Server: AUTHDNS0.MATHS.CAM.AC.UK
Name Server: AUTHDNS1.MATHS.CAM.AC.UK
REGISTRAR Contact: Network Solutions, LLC
>>> Last update of RDAP database: 2026-02-12T01:13:16Z         

			#
# robots.txt
#
# This file is to prevent the crawling and indexing of certain parts
# of your site by web crawlers and spiders run by sites like Yahoo!
# and Google. By telling these "robots" where not to go on your site,
# you save bandwidth and server resources.
#
# This file will be ignored unless it is at the root of your host:
# Used:    http://example.com/robots.txt
# Ignored: http://example.com/site/robots.txt
#
# For more information about the robots.txt standard, see:
# http://www.robotstxt.org/robotstxt.html

User-agent: *
# CSS, JS, Images
Allow: /core/*.css$
Allow: /core/*.css?
Allow: /core/*.js$
Allow: /core/*.js?
Allow: /core/*.gif
Allow: /core/*.jpg
Allow: /core/*.jpeg
Allow: /core/*.png
Allow: /core/*.svg
Allow: /profiles/*.css$
Allow: /profiles/*.css?
Allow: /profiles/*.js$
Allow: /profiles/*.js?
Allow: /profiles/*.gif
Allow: /profiles/*.jpg
Allow: /profiles/*.jpeg
Allow: /profiles/*.png
Allow: /profiles/*.svg
# Directories
Disallow: /core/
Disallow: /profiles/
# Files
Disallow: /README.md
Disallow: /composer/Metapackage/README.txt
Disallow: /composer/Plugin/ProjectMessage/README.md
Disallow: /composer/Plugin/Scaffold/README.md
Disallow: /composer/Plugin/VendorHardening/README.txt
Disallow: /composer/Template/README.txt
Disallow: /modules/README.txt
Disallow: /sites/README.txt
Disallow: /themes/README.txt
Disallow: /web.config
# Paths (clean URLs)
Disallow: /admin/
Disallow: /comment/reply/
Disallow: /filter/tips
Disallow: /node/add/
Disallow: /search/
Disallow: /user/register
Disallow: /user/password
Disallow: /user/login
Disallow: /user/logout
Disallow: /media/oembed
Disallow: /*/media/oembed
# Paths (no clean URLs)
Disallow: /index.php/admin/
Disallow: /index.php/comment/reply/
Disallow: /index.php/filter/tips
Disallow: /index.php/node/add/
Disallow: /index.php/search/
Disallow: /index.php/user/password
Disallow: /index.php/user/register
Disallow: /index.php/user/login
Disallow: /index.php/user/logout
Disallow: /index.php/media/oembed
Disallow: /index.php/*/media/oembed
        

Technisches SEO

On-Page-SEO

Inhalt und UX