For example, making a telephone with a paper cup, magnet and wire, might be suitable for middle schools, while examining the alternating current and electromagnetic induction with an oscilloscope, require more sophistication. Each lab ends with a class discussion Very useful feature for clarification of the concepts. It emphasizes the main features developed during the lab. Class discussion eliminates misconceptions. Discussions of the errors involved in the running the project and also of the limitations of the information gathered by the project.
Discussion also focuses on possible improvements of the project.
The text has additional questions not covered that require further research. The questions encourage the student to perform additional research at the library or on the Internet. The text has several projects involving field trips They are designed to combine fun and high tech, such as navigation by using a GPS unit, or studying force and energy at an amusement park. Most laboratories are inexpensive to set up Because the labs can be assembled inexpensively, they should be appealing to environments without to many resources. Working in groups has shown a positive influence on most students.