What do paleontologists, dinosaur tracks, and the nature of science have in common? They're combined here in an inquiry activity where students use methods of observation and inference to devise evidence-based explanations for the data they collect about dinosaur tracks, much like the methods used by paleontologists. Students then debate the…

A well-known lesson taught by many upper-elementary and early-middle-school teachers at the beginning of the school year asks students to compare how arm span relates to height. Students measure their height and arm span and compare their measurements to those of their classmates. This lesson gets students measuring, graphing, and practicing…

In this article, the author presents the science and engineering practices from the recently released "A Framework for K-12 Science Education: Practices, Crosscutting Concepts, and Core Ideas" (NRC 2011). The author recognizes the changes implied by the new framework, and eventually a new generation of science education standards will present new…

The creation of schoolyard gardens is a growing movement in the United States and around the world (Ballard, Tong, and Usher 1998; Pope 1998; Lewis 2004). It brings together all of the features of authentic hands-on science: Students can collect data on plant growth, observe the plant and animal interactions in the garden, and acquire a sense of…

The messages students receive through popular media such as movies, television, the internet, and music videos have a powerful influence and can shape their thinking. A national survey of media use by 8- to 18-year-olds found the average adolescent spends over seven and a half hours daily with entertainment media (KFF 2010). Rather than viewing…

In teaching science today, the emphasis is on inquiry-based pedagogies, with the expectation that students in the science classroom will be exposed to the theories and practices of scientists in the science community. However, for many science teachers, implementing inquiry in the classroom is a daunting task. In the traditional classroom setting,…

Conference attendees arrive at the registration desk at 9:00 a.m. sharp, eager to start their day. While standing in line, they talk excitedly about the sessions they've chosen to see, the original investigation they'll be presenting, off-site field trips for which they've registered, and the businesses scheduled to have booths in the Exhibitor's…

In this brief article, the author, a science teacher at F. C. Hammond Middle School in Alexandria, Virginia, describes how the setting up of a simple science experiment on the first day of school can get students excited about learning science. The experiment involves heating a small amount of water in a flask, then covering the opening of the…

It is not enough for students to acquire knowledge about how food is produced and processed; they must also come to understand the biological and environmental contexts in which food production, processing, and transportation take place. Through diagramming, students begin to understand that our food system has a series of interacting parts and…

Students enjoy carrying out an exciting and challenging research project that combines science with computers and mathematics to investigate how polyacrylate animals change in size over time when placed in water and aqueous salt solutions. The hands-on activity motivates students and provides them with the necessary skills and information to have…

"His handwriting checks out and his prints look pretty good. Move him to the top of the list," orders the 13-year-old captain. His co-detective makes appropriate procedural notes. "Bring the next one up. Get a foot measurement and let Andre print him before we talk." In another corner of the room, two girls administer a solemn oath to one of six…

Within this huge national park (over two million acres spread across Wyoming, Montana, and Idaho) are steaming geysers, hot springs, bubbling mudpots, and fumaroles, or steam vents. Drives on the main roads of Yellowstone take tourists through the major hot attractions, which also include Norris Geyser Basin, Upper and Lower Geyser Basin, West…

As heat sources go, the old standby for elementary and middle school science laboratories has been the centuries old alcohol lamp. Unfortunately, this inexpensive heat producer has been a continuous source of accidents--many of which are relatively serious. Hot plates are emerging as the most popular source of heat for science experiments. The…

Nearly 20 years after the release of The Harvard-Smithsonian Center for Astrophysics' video, "A Private Universe", much research has been done in relation to students' understanding of space-science concepts and how to effectively change these ideas. However, student difficulties with basic space-science concepts still persist. This article will…

Encouraging students' interest in science has never been more important. Science plays a greater role in everyones lives than ever before, and students who have a solid foundation in science are prepared to pursue a wide range of opportunities in high school, college, and the workplace. Yet many students--particularly girls and students from…