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Lesson 1.1 Vocab

Big History
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Definition

a unified account of the entire history of the universe that uses evidence and ideas from many disciplines to create a broad context for understanding humanity; a modern scientific origin story

Use In A Sentence

Big History encourages students to see the connections between their lives and the history of the universe.

complexity
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Definition

the quality of being intricate and compounded

Use In A Sentence

Organic compounds are not only unique in their complexity, they are also unusually numerous.

Goldilocks Condition
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Definition

the specific set of conditions necessary to enable greater complexity

Use In A Sentence

Most scholars will argue that the creation of our habitable Earth occurred by chance as a result of a series of Goldilocks Conditions.

history
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Definition

the continuum of events occurring in succession leading from the past to the present, and even into the future

Use In A Sentence

Events that happen now or in the future will become part of history.

threshold of increasing complexity
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Definition

moments in the history of the universe when specific ingredients under the right "Goldilocks Conditions" come together to create something new and more complex

Use In A Sentence

The Cambrian Explosion was a threshold of increasing complexity when multicellular life grew exponentially.

universe
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Definition

all matter and space in existence, including the Earth and the heavens

Use In A Sentence

The Milky Way is just one of many galaxies scattered throughout the universe.

Welcome to Big History

Driving Question: How does learning about the history of the Universe help us understand the world today?

Big History covers the 13.8-billion-year story of the Universe—that’s a lot of time and space! But what does that have to do with today? Let’s explore how Big History is different from other history courses.

Learning Objectives:

  1. Evaluate how Big History is unique.
  2. Define thresholds of increasing complexity.
STEP 1 Less than 15 mins

Opener: Welcome to Big History

Teaching Tools

Openers are quick, fun ways to activate prior knowledge, reveal student misconceptions, and prepare students for what’s coming in the lesson. In this short opener, they’ll decide what history means to them. Remind them that there’s no “correct” answer here!

Okay sure, so this is a different kind of history class—but what is history anyway?

STEP 2

Yes or No? You Decide!

Teaching Tools

The Unit Notebook is a great opportunity for informal writing. Informal writing helps solidify ideas and support retention and understanding of concepts, events, and eras. For more support on informal writing, including its benefits, check out the first two pages of the Writing Guide External link .

You’re going to learn a lot in this course—and you’ll use the Unit Notebook to keep track of how your thinking is changing. Let’s see how!

STEP 3

Our Past, Present, and Future

Teaching Tools

Did you know that each article in the course is available in multiple Lexile levels and has an audio version to help support student learning and literacy? Choose different Lexile levels using the Version drop-down menu in the upper-left corner of the article, and access the audio by clicking on the speaker icon in the upper-right corner. Find more reading supports on pages 3–5 of our Reading Guide External link .

What makes Big History so, well, big? Dig into the activities and article below and ask some important questions.

STEP 4

Thresholds of Increasing Complexity

Teaching Tools

Understanding and remembering the Big History thresholds can be challenging for students. In this community post External link , Big History teachers share ideas and resources to help students remember this core concept, including ways to get kids moving around the classroom and sharing the thresholds with others, and a threshold goal-setting activity to help this concept stick. 

The Universe today is pretty complicated: stars, planets, plants, people, you. But it used to be very, very simple. Examine the images and comic below and consider: what changed?

STEP 5

Your Threshold

Thresholds aren’t just for Big History. Think through the thresholds that have shaped your life and made you more complex.

STEP 6

Closer: Welcome to Big History

Teaching Tools

Want to inject a little more fun into this closer? Ask students to make a tagline for the threshold they created in the My Threshold activity. Then, have them create a movie trailer using their threshold and tagline.

Companies create catchy taglines to promote their products. What’s your Big History tagline?