Divide And Conquer Math
For teachers Save your spot / Sign in
Divide And Conquer Math

Explore Divide and Conquer Math

A quick tour of the things that are easy to miss. Everything here is free, and most of it works without an account.

For students

7 things

Starting from the home page

The home page asks "Where would you like to start?" and gives you three ways in: match your class or textbook, jump straight to a College of DuPage course, or review for a placement exam. Under that, Popular subjects is a shortcut into the busiest courses.

Once you've watched something, a Pick up where you left off card appears at the top with your last video.

Line the site up to your textbook

If your class uses a textbook, you can make the site follow it. Pick your book and edition and the chapters rearrange to match, so chapter 4 means your chapter 4. There are 98 books to choose from, and if yours isn't there you can work by topic instead.

How: Textbooks, or Match my class on the home page.

Save your spot, on any device

With a free account, the site remembers where you stopped in every class and follows you between your laptop and your phone. Start a video in the library, finish it on the bus. Sign in with a password or with a link we email you, whichever you feel like — and forgetting the password costs you nothing.

How: Save your spot, then just keep watching. Nothing else to switch on.

Saved for review

Under any video there's a Save for exam review star. Starred videos collect in one list on your account, so the week before an exam you already have your revision list instead of hunting back through chapters for the one that finally made sense.

How: star as you watch, then open My account and look under Saved for review.

My collections

Collections are your own groupings of saved videos: "Exam 1", "Things I keep forgetting", whatever is useful. A video can sit in as many collections as you like.

Each collection has a share link. Send it to a study partner and they see the same list without needing an account. The link is view-only, so nobody can change your collection.

Making a collection takes two steps:

  1. On My account, type a name under Start a new collection and press Create it.
  2. Then under Saved for review, every starred video has a dropdown beside it. Choose the collection and press Add.

My classes

If your teacher set up a class here, they'll give you a short code. Joining pins their version of the course to your account: their choice of videos, in their order, one click from your account page. You can leave a class at any time.

How: My account, then Have a class code from your teacher? and Join the class.

Printing and downloading the notes

Most videos have guided notes to write on. You can take one set, or grab a whole section or class at once instead of clicking through every video.

You choose the shape: Print sends them straight to the printer, Download gives you the PDFs, and Download MS Word gives you copies compatible with accessibility readers. For a whole class you can also ask for one combined file rather than a folder full.

How: Print or Download Notes in a Batch on any section page, or Print or download notes for the whole class on a class page.

Stuck?

If something here doesn't do what you expected, say so on the Say Hi page or send it through Feedback. Both get read.

For teachers

3 things Open to everyone — no permission, no invitation, nothing to switch on.

Teacher mode

A switch on your account page. Turning it on puts your classes and curation tools first and tailors what the site shows you. Turning it off is just as easy, and it destroys nothing: your classes, your picks and your codes are all still there, you simply get the student view again.

How: My account, then the Teacher mode switch.

Create a class

A class gives you a page of your own with a join code for your students. You pick which videos belong to your course, and in what order, and that is what your students see. Nothing is uploaded and nothing is graded here. It is a reading list, not a gradebook.

Students who join do not have to make an account to view it, and you only ever see how many have joined, never who.

How: For Teachers, then Create a class.

Running your class

There is more than one way to use a class, from keeping the default setup to grouping every video into your own weeks or units. The teacher guide walks through four of them, with the trade-offs of each.

Read Four ways to run your class.

Stuck?

If something here doesn't do what you expected, say so on the Say Hi page or send it through Feedback. Both get read.