WW2 Encryption is explored with a focus on the Enigma. Read more here. Created by Brit Cruise.

Solving the P/E conundrum by looking at a different valuation metric (enterprise value). Created by Sal Khan.

Enumerated and implied powers of the US federal government with a focus on the Commerce Clause and the Necessary and Proper Clause of the US Constitution.

Where we live in society plays a huge role in the environmental benefits and risks that we're exposed to.

Enzymes as catalysts for reactions in biological systems; discussion of substrates, active sites, induced fit, and activation energy.

In this video segment adapted from NOVA scienceNOW, learn how what you eat, drink, or smoke may affect the instructions your epigenomes send to your genes, and as a result, change how your DNA is expressed.

David explains the equation that represents the motion of a simple harmonic oscillator and solves an example problem. Created by David SantoPietro.

Total surplus is maximized in a market at equilibrium. In this video, we talk about why this is and the math behind this assertion.

How are nominal real interest rates determined? In the money market! Learn about the money market in this video.

Debt vs. Equity. Market Capitalization, Asset Value, and Enterprise Value. Created by Sal Khan.

How can we communicate in the presence of noise? Created by Brit Cruise.

Escrow is a way of holding monies in a third-party account until all of the necessary aspects of a transaction have been carried out. In this video, learn about the role of escrow in real estate transactions, how escrow accounts work, and what an escrow agent is.

In this lesson, students read pages 4-22, "Las Uvas," in Esperanza Rising and as a whole group identify how the structure of the chapter contributes to the overall story (RL.5.1, RL.5.5).
In triads, students then research one of three topics to build background knowledge about the historical setting of Esperanza Rising. Working in expert groups allows small groups to engage in an effective, time-efficient comprehension of a broader topic because students become an expert in one topic and hear oral summaries of the others to gain an understanding of the broader topic.
This lesson is the first in a series of three that include built-out instruction for the use of Goal 1 Conversation Cues. Conversation Cues are questions teachers can ask students to promote productive and equitable conversation (adapted from Michaels, Sarah and O'Connor, Cathy. Talk Science Primer. Cambridge, MA: TERC, 2012. Based on Chapin, S., O'Connor, C., and Anderson, N. [2009]. Classroom Discussions: Using Math Talk to Help Students Learn, Grades K-6. Second Edition. Sausalito, CA: Math Solutions Publications). Goal 1 Conversation Cues encourage all students to talk and be understood. As the modules progress, Goal 2, 3, and 4 Conversation Cues are gradually introduced. See the Tools page for the complete set of cues. Consider providing students with a thinking journal or scrap paper. Examples of the Goal 1 Conversation Cues you will see in the next two units are (with expected responses):
After any question that requires thoughtful consideration:
"I'll give you time to think and write or sketch."

"I'll give you time to discuss this with a partner."

To help students share, expand, and clarify thoughts:
"Can you say more about that?"

"Sure. I think that _____."

"Can you give an example?"

"OK. One example is _____."

"So, do you mean _____?"

"You've got it./No, sorry, that's not what I mean. I mean _____."

Note that Goal 1 Conversation Cues (and expected student responses) were built into the Discussion Norms anchor chart in Lesson 1. Conversation Cues and discussion norms are similar in that they seek to foster productive and collaborative conversation. Furthermore, Conversation Cues aim to ensure equitable conversation by gradually building student capacity to become productive, collaborative participants. Goal 1 Conversation Cues focus on the fundamentals of encouraging students to talk and be understood. Goals 2-4 take students to deeper levels of conversation, from listening to others, to deepening their thinking, to thinking with others.
Students practice their fluency in this lesson by following along and reading silently in their heads as the teacher reads pages 4-22 of Esperanza Rising aloud during Opening A.
In this lesson, the habit of character focus is on working to become an ethical person. The characteristic that students practice is respect, as volunteers share out personal reflections on what happened in Esperanza Rising.
The research reading that students complete for homework will help build both their vocabulary and knowledge pertaining to human rights. By participating in this volume of reading over a span of time, students will develop a wide base of knowledge about the world and the words that help describe and make sense of it.

15. Brave New World: Ethical Considerations and Risks

The trifecta of globalization, urbanization and digitization have created new opportunities and challenges across our nation, cities, boroughs and urban centers. Cities in particular are in a unique position at the center of commerce and technology becoming hubs for innovation and practical application of emerging technology. In this rapidly changing 24/7 digitized world, governments are leveraging innovation and technology to become more effective, efficient, transparent and to be able to better plan for and anticipate the needs of its citizens, businesses and community organizations. This class will provide the framework for how cities and communities can become smarter and more accessible with technology and more connected.

In this video excerpt from NOVA, learn about the advantages, disadvantages, and ethical implications of preimplantation genetic diagnosis, or PGD, a technique used to screen embryos created through in vitro fertilization for diseases.

A cosine wave emerges from Euler's Formula. Music, no narration. Animated with d3.js. Created by Willy McAllister.

Euler's formula relates the complex exponential to the cosine and sine functions. This formula is the most important tool in AC analysis. It is why electrical engineers need to understand complex numbers. Created by Willy McAllister.

A sine wave emerges from Euler's Formula. Music, no narration. Animated with d3.js. Created by Willy McAllister.