A new course, with a new story to tell,
and new materials to help you tell it.
This video lays out the basic structure of Big History.
Let's start with a brief description
of the eight thresholds of increasing complexity
used in the course, and then do a quick overview
of the course materials.
Let's start by looking at the course itself.
If you haven't seen David Christian's TED Talk,
or if it's been a while, check it out.
Now, here's the short version.
Big History is made up of eight thresholds.
Each represents a moment when the universe got more complex--
so much so that there was no going back.
The first of these thresholds is the Big Bang.
All of the matter and energy in the universe
came from this instant.
About 400,000 years later, the first stars lit up.
As the stars burned, new elements were formed,
but it's actually in their fiery death
that we find all of the elements that exist today.
That's our third threshold.
From this leftover stuff floating in space,
new stars form.
One percent of the material not sucked into the creation
of new stars becomes planets, our fourth threshold.
One planet in particular has just the right conditions,
with just the right amount of energy and liquid water,
for us to reach the fifth threshold: life.
Zoom ahead a few billion years and those first instances
of life have evolved into humans.
Collective learning, which humans are
uniquely good at, represents the sixth threshold.
We roam the earth as foragers until the planet becomes
so populated that we need to find a way to feed everyone.
With the advent of agriculture 10,000 years ago,
we cross our seventh threshold.
Finally, around 250 years ago, humans learned to use energy
in new ways during the Industrial Revolution,
and voil¢, our eighth threshold, the modern revolution.
We haven't been the same since.
The Big History Project tells the story
of these eight thresholds over ten units.
So eight thresholds, ten units.
If you look at the timeline on the home page
of the school website, or if you do the math,
you'll notice that not every threshold has its own unit.
Here's how it breaks down:
Unit One is an introduction to the course.
It establishes the outline and explores the notion
of origin stories.
Unit Two looks at the Big Bang.
Unit Three deals with the first stars
and chemical elements, combining thresholds two and three.
Units Four, Five, Six, and Seven move
through the next four thresholds neatly.
Then, in Unit Eight, we talk about what David Christian calls
the unification of the four world zones.
Although this isn't a threshold, it's a critical part
of the Big History narrative.
Unit Nine looks at the modern revolution,
and Unit Ten ends the course with the look at the future.
A couple of key points to make about the structure
of these units.
They are not to scale.
What we mean by that is that the early units,
which focus on prehuman history, are much shorter
than the later units.
If the typical school year is eight months,
many teachers try to get all the way to Unit Six
by the beginning of the fourth month.
We'll talk a lot more about pacing in another video,
but it's probably one of the most important aspects
of planning your year of teaching
the Big History Project.
Let's talk about the content of the units themselves.
If you go to the home page of each unit, you'll find rows
of lessons that are broken down into articles, videos,
infographics, and activities.
All of the materials are designed to be downloadable
to make it easier for classrooms where not everyone has a device
or where the internet connectivity is sketchy.
But here's a tip: even if you don't download
any other materials, we do recommend that
you download the videos before you show them to your class,
just to minimize the risk of interruptions.
Each unit also includes
a unit guide that walks through the key ideas, vocab,
and possible student misconceptions in that unit;
a PowerPoint of the key graphics in the unit;
a text reader that includes all versions of every article
in the unit, in Word document format.
You're free to revise, edit, and reuse any of the materials
in the Big History Project for educational use.
These materials are there to make things easier for you.
Each lesson is displayed as a series of thumbnails,
which are just small images that make it easy to move
from activity to activity.
Something many people miss, so we're going to
call it out here, is that the lessons
are all available in long form.
We call this the lesson view.
The lesson view includes a ton more detail aimed at you,
the teacher.
This is where all of the details of the activities are displayed.
While most students don't end up using this view very often,
teachers tell us they find it helpful to use this view
for planning purposes.
In the lesson view, you'll find little hints
on the left-hand side of the page that link
to resources we think you'll find helpful.
And on the right-hand side, you'll find random related facts
and links to connected material.
The lesson view is also one of the easier ways to get
at the vocabulary for each lesson,
just look on the right-hand side at the top of the lesson page.
Back to the unit home page for a second.
If you look at the home page for each unit, you'll see
that after the last lesson, there's a row with the heading
"Other Materials."
These are resources that you'll definitely want
to consider using, but which aren't baked
into the unit planning documents.
Stuff included in this row?
Things like tests, quizzes, and older articles and videos.
There just wasn't room in the lessons
for our ever-expanding course.
In this case, anyway, "Other Materials"
isn't a euphemism for "I don't know where to put this."
So, let's recap.
Big History tells the story of eight thresholds
of increasing complexity over the course of ten units.
In addition to all of the lesson stuff-- the videos, readings,
infographics-- each unit includes a guide,
lesson plans, and assessments.
That's all for now, but be sure to check out
the Big History Project Teacher Community on Yammer
for more information about the course.
For more infomation >> Trump believes North Korea is sincere about denuclearization - Duration: 4:21. 
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