In this video Paul Andersen explains how covalent network solids form elementally (like graphite) or by combining multiple nonmetals (like quartz). Covalent network solids contain elements from the carbon group because they have four...

Golden, salty, crunchy sticks of awesomeness are only a few steps away from your couch. Fry up some amazing french fries and skip the trip to the drive-thru.

Mr. Addit describes the difference between the terms volume and capacity. He then reviews the measurements of liquids and estimates the capacity of some glasses.

Mr. Addit reviews weight and capacity and how to estimate their measurements.

Coach Socrates shows Miss Palomine how to make Homemade Lemonade.

Converting Customary Measurements of Capacity explores measurements of capacity using the customary system.

In this video, the teacher explains how to solve word problems involving volume using diagrams. They clarify the concept of volume and its application to liquids, gases, and solids. The teacher also demonstrates the use of conversion...

This video lesson teaches students how to estimate and solve real-world fraction problems using area models. It provides examples and step-by-step instructions on how to calculate, estimate, and compare fractions.

A team of researchers have found evidence that the Mayans had managed to build a sophisticated water purification system in Tikal — over 2,000 years ago.
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According to the lead researcher, Kenneth Tankersley of the...

This video explains the formation and identification of minerals. Major mineral groups, basic crystal systems, the physical properties of minerals, and everyday uses of minerals are discussed. Other terminology includes: inorganic,...