Part eight of a number that just keeps getting bigger: Mappings and Functions. Remember, past lessons can all be found by clicking on the “math from scratch” tag below.

Part seven of a number that just keeps getting bigger: Subgroups. Remember, past lessons can all be found by clicking on the “math from scratch” tag below.

Part six of lots: Permutation Groups.

We now have part five of oodles: Structuring Symmetry, with the first application of the group axioms.

This lesson defines “algebra” and starts to deal with a particular type of algebra. Lesson four: The Group Axioms is available here.

Here it is, part three of many: Defining Whole (and Natural) Numbers.

Part two in our tri-weekly series is here. This week’s topic: Set Theory. For past topic, click the “math from scratch” tag below. There will be too many of these to include links in every article.

Bureau 42’s biggest educational project to date begins here. The ultimate goal: teach everything we possibly can in math from the ground up in a sequence of comprehensive lessons, released no more than three weeks apart. This project will likely take years. The first lesson, defining mathematical relations, is available here.