Day 1 | LThMath Advent Calendar
Updated: Nov 30, 2021
In today's post I want to share some great advent calendars all over the internet. There are a lot of blogs, organizations, websites that have some interesting Advent Calendars that are worth to check.

The Plus advent calendar 2021
This year they have started a collaboration with the Isaac Newton Institute for Mathematical Sciences (INI). The INI is an international research centre that attracts leading mathematical scientists from all over the world, and our neighbour here on the University of Cambridge's maths campus.
NRICH Advent Calendar 2021 - Primary (5 - 11 age)
NRICH Advent Calendar 2021 - Secondary (11 - 18 age)
The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.
Transum Maths Advent Calendar
Transum is conceived, designed and maintained by me, John Tranter, and has been growing steadily since 1997. He has a background of over thirty years of teaching Mathematics in the UK and abroad and most recently he has worked for fifteen years as an Assistant Principal at one of the largest British International schools in South-East Asia.
Mathsvent Calendar
Try this Mathsvent Calendar from Phil Bruce, you can find him on Twitter.
Mscroggs Advent Puzzles
From Matthew Scroggs – try his Advent Puzzles for 2021; behind each day (except Christmas Day), there is a puzzle with a three-digit answer.
If you found any other Advent Calendars (even older editions), feel free to let us know and we will add them to our list.