Soil's Secret

View how microbes grow in soil. Class members first create a Winogradsky column to grow bacteria. They then set up the column of mud in a plastic bottle and include a food source for the microbes and observe the column of mud over the...

All soil is not created equal! A lab activity asks learners to collect and analyze soil. Specific calculations determine the amount of sand, silt, and clay in a sample and allow individuals to identify the soil texture. 

Components of soil, such as inorganic or organic materials are detailed along with the main contributions of each. Deposits, weathering, and distinct types of characteristics and properties of soil classes are given.

Strange fact—most dollar bills have a trace of cocaine! Chemists can tell us many interesting facts about money. Science makes counterfeiting an almost impossible process. An installment of the ACS Reaction series explains these...

Peer review of science laboratory reports? You bet! First, learners work in pairs to review a scientific article. Then they trade lab reports for peer review. The end result is the publication of a classroom scientific journal!

Does your blood type matter? The video explains the four main blood types and the importance of knowing blood types when performing transfusions. The interactive reviews the information with a quick graphic organizer and questions.

Young scientists learn the importance of knowing blood types and their compatibility. The instructor in the video explains each type of blood and their antigens and antibodies, and then differentiates between AB blood and Rh blood...

Scientists categorize clouds by both height and shape since both traits impact the weather independently. Viewers fly high to learn about the characteristics of each type of cloud. NOVA explains the composition of clouds, the atmospheric...

Take your class up, up, and away with an engaging weather balloon simulation! Individuals get hands-on experience in creating and launching their own airborne labs to study how temperature and pressure affect substances at 100,000...

Some scientists spend their entire careers analyzing and learning about soils. An interesting video lesson provides an overview of what soil scientists do and why. Pupils learn how soil analysis connects to other branches of science...