Curated OER
Tools, Technologies and Inventions through the years
5th graders will gain an understanding of how, what, and why people invent tools. This PowerPoint provides a complete description of what tools are, types of tools, why we make tools and what impact they have had on society. There are...
Urbana School District
Magnetism
The compass was first used in 206 B.C., but we didn't discover magnetic poles until 1263 A.D. Presentation begins with the history of magnetism before continuing on to magnetic fields, magnetic forces, electromagnets, currents,...
National Energy Education Development Project
Exploring Hydropower
In 2006, about 20 percent of the world's electricity was generated from hydroelectric power. In the presentation, scholars review the water cycle and gravitational energy to begin to understand how humans harness the power of water. They...
Curated OER
Biotechnology
A continuous cascade of information comes through this PowerPoint on biotechnology. The topic is defined, a history is presented, and basic genetic engineering techniques are explained. The topic is covered in an objective manner,...