¿Podemos ver el ADN de un plátano a simple vista?En este experimento vamos a comprobar cómo mediante los procedimientos sugeridos podemos llegar a visualizar la cadena de ADN de un plátano. Para ello, sólo tenemos que seguir los pasos que se plantean a continuación.

In this strawberry DNA extraction lesson, students will explore the fundamental building blocks of life by isolating DNA from strawberries. Using simple household materials, they will follow a step-by-step procedure to break down the strawberry cells and release the DNA. This hands-on activity will allow students to see and touch DNA, making the abstract concept of genetic material tangible and engaging. Throughout the lesson, students will develop their scientific inquiry skills, including making observations, forming hypotheses, and discussing their findings.

This is the first of three short videos showcasing the dramatic changes in Alaska's marine ecosystems. This introduction to the impacts of climate change in Alaska includes interviews with Alaska Natives, commentary by scientists, and footage from Alaska's Arctic.

This video is the second of three short videos showcasing the dramatic changes in Alaska's marine ecosystems. The video highlights the marine mammals and birds and how they depend on Arctic sea ice, as well as questions about how these animals will cope in the face of climate change.

Imagine being the size of an ant. Be careful - a face-to-face encounter with an ant would be scary and potentially life-threatening! But, if you avoided being eaten, you could learn a lot about ant anatomy from a close-up view. Ants have many body parts that are normally hard to see without a magnifying glass or microscope. And each structure has its own special function.

This lesson is a presentation of famous scientist throughout history where the students will learn and take notes about the contributions and discoveries made in science.

Almost everyone has wished at one time or another to be able to fly like a bird. Just the thought of soaring above your city or town without any mechanical device gives us a reason to envy these feathered animals. Also in: French | Spanish

This video on phenology of plants and bees discusses the MODIS satellite finding that springtime greening is happening one half-day earlier each year and correlates this to bee pollination field studies.

This video describes the role of the brain in regulating body temperature and how sometimes fever is employed to fight off infection.

This video segment from the teacher video series Learning That Works uses a case study to highlight the effectiveness of a project-based, real-world approach to teaching science.

This course introduces the basic driving forces for electric current, fluid flow, and mass transport, plus their application to a variety of biological systems. Basic mathematical and engineering tools will be introduced, in the context of biology and physiology. Various electrokinetic phenomena are also considered as an example of coupled nature of chemical-electro-mechanical driving forces. Applications include transport in biological tissues and across membranes, manipulation of cells and biomolecules, and microfluidics.

Explains the history of the neolithic era and the origins of the first agricultural revolution, and how that contributed to agriculture today.

This activity is takes place in nature and in the classroom. Students are gathering different types of leaves and naming characteristics of each then sorting them by those characteristics. Students then make a picture with leaves and writes 2-3 sentences about their picture using the characteristic words.

The evolutionary tree presented focuses on relationships among the ray-finned fishes (Actinopterygii). You can click on the colored logos to read about evolutionary innovations and see lists of characteristics that evolved in different lineages. Note that this tree has been pruned to focus on certain groups of interest.

A biome is a large community of vegetation and wildlife adapted to a specific climate.

This guided inquiry activity is designed to help students understand that people get all of their knowledge from their senses, and that is why our senses are so important.

Students are presented with an engineering challenge that asks them to develop a material and model that can be used to test the properties of aortic valves without using real specimens. Developing material that is similar to human heart valves makes testing easier for biomedical engineers because they can test new devices or ideas on the model valve instead of real heart valves, which can be difficult to obtain for research. To meet the challenge, students are presented with a variety of background information, are asked to research the topic to learn more specific information pertaining to the challenge, and design and build a (prototype) product. After students test their products and make modifications as needed, they convey background and product information in the form of portfolios and presentations to the potential buyer.

Students will make observations of the behavior and life stages in flour beetles.

This activity is a guided inquiry by students into balancing ecosystems through food chains and webs.