This two-part video describes the effect and importance of resistance in electrical circuits. The videos are based on the textbook "Lessons ...more
In the first video, you'll see how contact between different materials can result in attraction or repulsion. Experimental results are ...more
In the first video, it introduces the principles and terminology of mechanical electrical switches. It covers terms such as contacts ...more
The first video introduces the basic electrical quantities of charge, current, voltage, and resistance. The concept of quantities and units ...more
This is a guided hands-on laboratory activity to help a student understand the proper and safe use of a multimeter to measure electrical ...more
This is a guided hands-on laboratory activity to help a student understand the proper and safe use of a multimeter to measure voltage using ...more
This guided hands-on laboratory activity to help a student understand the proper and safe use of a multimeter to measure current using an ...more
This two-part video describes voltage, the potential difference or "pressure" that pushes electric charges through conductors. After ...more
This video is about electrical wires. It describes common types, configurations of wire, and wire terminology. It explain the gauge system ...more
This video introduces the concept of an electric circuit and how electrons flow through the wire. It describes the difference between an ...more
Caroline and Val from New Scientist make plastic from milk and vinegar. Sure it likes like food at first, but leave it for a couple days ...more
Ivan and Mick from New Scientist show us how to get the iron out of fortified breakfast cereal. You won't believe how much you can find!
Do not try this math trick at home. It is dangerous. Only qualified mathematicians should try this. If you are a qualified mathematician ...more
These guys make pennies change color in class. No, it's not real gold, and by the way - no, it's not real gold. Just watch and see how to ...more
This video shows you how to make Ballistic Gel, the same stuff the Mythbusters guys always use, from Gelatine and water. Ballistics gel is ...more
This video shows you how to make an extremely realistic, miniature volcano. You can get the Ammonium Dichromate off of eBay for around $10 ...more
Dr. Kiki creates fire from a pair of glasses, Moujan transforms an empty wine bottle into a lamp, and Heather reveals an underground band ...more
Lawrence Perez, from Saddleback College, and his assistant Charlie, give this two-part calculus lesson on integrating with special ...more
Lawrence Perez, from Saddleback College, and his assistant Charlie, give this intermediate-algebra lesson on logarithms, the bare basics of ...more
Lawrence Perez, from Saddleback College, and his assistant Charlie, give this intermediate-algebra lesson on logarithms. Always been ...more
