Lesson Samples

Lesson Samples

Below are some lessons samples from our curriculum library, grouped by category. These are fully functioning lessons. These lesson samples appear just as your students will see them. But since we're not working in a Learning Management System on this page, we're not reporting any grades or progress. First, we'll highlight some of the engaging features we use in our lessons.
  • Easy navigation.
  • Narrated slides, animations, and video.
  • Knowledge checks and quizzes.


Evaluating HVAC Airflow

Poor HVAC airflow can dramatically affect building energy performance, even if the building is otherwise energy-efficient. HVAC airflow problems are difficult to diagnose and fix. This lesson covers the causes and effects of common HVAC airflow problems. You'll learn the following.

  • How to evaluate an HVAC system's airflow.
  • How to diagnose inadequate airflow.
  • How to recommend solutions that improve HVAC airflow.

HVAC Refrigeration

Central air conditioners and heat pumps rely on the refrigeration cycle to provide heating and cooling. This lesson explains the refrigeration cycle in simple language with clear diagrams. You'll learn the following.

  • How HVAC refrigeration systems work.
  • Common problems that reduce refrigeration efficiency.
  • How to recognize refrigeration problems.
  • How to specify solutions that restore refrigeration effectiveness and increase efficiency.

Building Design

Building Energy Design Strategies

Building-energy design is essential for comfort, safety and energy efficiency. This course covers the building-energy design process and its benefits to the construction process. This lesson discusses the following topics.
  • Choices in the building design phase that affect energy efficiency.
  • How to select design details that promote building energy-efficiency.

Building Envelope

Super-Insulated New Walls

Superinsulated walls combine advanced framing, airtight sheathing, and insulation to achieve high R-values and superior airtightness. This lesson covers the structural features, thermal features, and weather-resistive features that typify superinsulated walls. This lesson discusses the following topics.
  • The benefits of superinsulated wall systems.
  • Features that distinguish superinsulated walls from conventional walls. Many systems
  • Methods to build superinsulated walls economically.

Building Science

Heat Loss and Gain

We divide heat transmission into two major compliments: heat loss and heat gain. Heat loss and heat gain determine how much energy a building uses for space conditioning. This lesson covers how to minimize heat transmission in buildings. You'll learn about the following.
  • Primary drivers of heat transmission in buildings.
  • Methods to evaluate heat loss and heat gain in buildings.
  • The best strategies to improve buildings with excessive heat-transmission.


Building-energy specialists and design consultants frequently use geometric calculations for energy auditing and building design. This lesson covers the basic geometric building shapes you’ll measure and calculate. You’ll learn how to calculate building areas, building volumes, and do other useful geometric calculations.