Space is a topic most learners find engaging. This article set out a short project investigating meteorite impacts, both practically and using simulations, and suggests resources that could be used. The formation of craters, such as those on the Moon caused by objects landing on its surface, is used to illustrate a study plan. The project is…

In this work, a versatile and user-friendly selection of stereolithography (STL) files and computer-aided design (CAD) models are shared to assist educators and students in the production of simple and inexpensive 3D printed filter fluorometer instruments. These devices are effective resources for supporting active learners in the exploration of…

The International Boiling Point Project is an online, collaborative project for students in grades 6-12 in which they investigate the impact of four factors (room temperature, elevation, volume of water and heating device) on the boiling point of water. A detailed procedure is provided for students in order to limit the number of variables…

The purpose of this activity is to introduce students to concepts of short-range and long-range scattering, and engage them in using indirect measurements and probabilistic models. The activity uses simple and readily available apparatus, and can be adapted for use with secondary level students as well as those in general physics courses or…

Plants and insects share a long evolutionary history characterized by relationships that affect individual, population, and community dynamics. Plant-herbivore interactions are a prominent feature of this evolutionary history; it is by plant-herbivore interactions that energy is transferred from primary producers to the rest of the food web. Not…

Describes a series of activities that help students form accurate conceptions of meiosis and how its process and purpose differ greatly from mitosis. Discusses the concept of crossing over. Uses a small plastic egg to engage students in a fertilization activity. (SAH)

Describes activities on two storage organs, carrots and radishes, which are plants that store some of the food their leaves make in modified roots, stems, and even leaves. (ASK)

Describes an alternative to teaching ecology by using bacteria to test competitor survival. Students observe a time-dependent selective killing of other unrelated bacteria by Pseudomonas aeruginosa. (SAH)

Points out the importance of effective health education to fight against tuberculosis (TB) which is the number one fatal infectious disease around the world. Describes a science curriculum on tuberculosis that includes information on the facts about tuberculosis, a forum on tuberculosis, and evaluation. (Contains 17 references.) (YDS)

Describes an activity using rubber bands to demonstrate Gibbs free energy, entropy, and enthalpy. Includes instructor information and a student activity sheet. (YDS)

Provides background information for teachers on mitochondrial DNA, pointing out that it may have once been a free-living organism. Includes a ready-to-duplicate exercise titled "Using Microchondrial DNA to Measure Evolutionary Distance." (JN)

Concepts to be developed, objectives, and student instructions are provided for an activity useful as an introduction to or review of Mendelian genetics and sex determination. Universal codes (read by optical scanners at supermarket checkout stands) from soup can labels are used as chromosome maps during the activity. (JN)

Describes an activity to learn about meteorology and weather using the internet. Discusses the National Weather Service (NWS) internet site www.weather.gov. Students examine maximum and minimum daily temperatures, wind speed, and direction. (SAH)

Describes a Science Technology and Society (STS) course for nonscience-oriented students in grades 10-12. The program comprises a collection of modules that present the scientific concept, its technological manifestation, and its societal relevance. (SAH)

Describes a method for teaching about DNA using looped cereals. Outlines the procedure and concept in detail. Presents several possible concepts that allow the instructor to choose what is the most appropriate for students. (SAH)