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## Welcome!

##### This module helps you build on what you already know by getting into our first few examples of some networks, and by building out five observation equations that are among the key building blocks when using least squares in the context of geodetic and spatial networks.

##### You’ll learn to derive and implement these observation equations as part of a broader spatial network. In turn, this will set you up for any future tests, for the associated lab, and for a stronger personal practice in this area.

## My own notes and the desired outcomes

I assume you’ll be building your own “perfect set of notes” as you go through this material – to make sure you have a succinct reference to help you be efficient on a test or in your future work. So, I’m sharing my own notes here with you to help with that.

I’m also sharing the desired outcomes. As in our previous modules, there aren’t cast as true learning outcomes despite the title. Rather, I want you to think of the second document below as a list of questions and actions you can use to check yourself as you go.

## The associated self-assessment problems, lab, and practice quiz

My usual practice in a course like this is to share some problems with you so you can assess your understanding of the material. These are embedded after the lessons below.

So, dig into these problems either after you’ve finished looking at the material or as you go. Hustle to figure out the answers. Leave no stone unturned. Get help if you need it. Like the notes, I’m going to assume you’re building the “perfect set of reference problems” to help you be efficient in a test or to look back at in practice.

Embedded in within the lessons below is a practice quiz, complete with an extended solution.

And there’s also a lab that integrates quite closely with this material. It’s called: Key observation equations for spatial networks + Their linearization and implementation. I recommend doing this as you go through this module.

If you’re taking this course from me as part of a university class then these are a *great* way to study. I can’t ask exactly the same questions on a test, of course, but I do generally design the problems in a way that you can expect to do as well in the formal assessments as you can do on these self-assessment questions.

Okay, now get started by clicking through the lessons below!