Salt: Up Close and Personal

Here is part two of a two-part instructional activity in which scholars investigate the changing states of water—liquid, solid, and gas—and how energy from heat changes its molecules. With grand conversation, two demonstrations, and one...

Totally gross out your class with the eighth lesson in this series on food science. Explore the microscopic world of bacteria by taking swabs of different classroom objects and growing colonies in petri dishes. An engaging activity that...

Learners create a model of a salt marsh to discover the impact of pollution and human activities on water-based habitats including bays and the ocean. They recognize the relationship between natural and developed areas. Students impact...

Sixth graders investigate the various types of pollutants found in water and ways to help prevent water pollution. Through a hands-on experiment, students create samples of polluted water by mixing water with vegetable oil, dirt, and...

Students examine coral skeletons. For this science lesson, view real coral skeletons. Students explain the differences between an observation and an inference. Students draw a coral skeleton.

Students see how the properties of salt affect the color of flame, the flow of electricity, and the freezing temperature of water. They identify salt and sugar crystals under a microscope and discuss various practical uses of salt.

Students explore the world of the very small using a Flash plug-in Virtual Electron Microscope. They complete and discuss an activity in which unknown samples are placed under the computer simulated microscope to determine where the...

Young scholars discuss certain properties of salt and how it is used every day as well as harmful uses. They experiment with salt to see it conduct electricity, form crystals and water freezing temperature. They complete a worksheet to...

Students examine a microscope from the 18th century. In this microscope lesson, students investigate how it works, what it was used for and how the tool has evolved through the years. Students also build knowledge on how compound...

Learners explore magnification. In this scientific observation skills lesson, students observe sea life items and draw pictures of what they observe. Learners predict which lens will have the strongest magnification when given three...