Fourth in a set of several little lessons on density, this one compares the density of fresh and salt water. First by demonstration, and then by a hands-on activity, learners find that adding salt increases the density, as is evidenced...

Students study the color of stars. In this astronomy based lesson, students observe the colors in an open flame and apply the information collected about color and temperature to the visible light emitting from the photosphere of various...

Junior high schoolers learn how to read a water meter, track their family water usage, and discuss the amount in class with other pupils. They will interpret real-world data and graph it. It is ideal for increasing awareness and...

Convection is thoroughly demonstrated using a model of Earth's mantle. Detailed background information is provided for the teacher, as well as a list of materials. Although a colorful and detailed worksheet is available for the class,...

The title says it all! Help your pupils learn all about whales. Class members research different species of whales and share the information via video conferences with kids from another school. They conduct research on a selected species...

Students will make a circuit on a mystery card. They will connect wires, bulbs, and battery to form an electrical tester. After students learn how to make one following the directions, they can create their own mystery card by...

Students make a circuit on a mystery card. They then use an electrical tester to determine where electricity flows between circles on the card. They will connect wires, bulbs, and a battery to form an electrical tester.

Learners test their knowledge of electrical conductors and circuits by constructing an electric tester and using it to determine where electricity flows between circles on a mystery card.