Explore NOVA Online's interactive steam engine and discover how this machine can convert heat to mechanical energy.
Acids and Bases: Testing Rockets
It would seem that bottles of lemon juice and rockets have only their basic shape in common. However, as two cast members from ZOOM demonstrate in this adapted video segment, when baking soda is added to the mix, a plastic bottle can act very much like a real rocket. Grades 3-8.
"I'm Going to Fight Like Hell"Anna Taffler and the Unemployed Councils of the 1930s
The Communist-led Unemployed Councils mobilized jobless men and women in hundreds of local communities to demand jobs and better treatment from relief authorities. In these excerpts from a recorded interview, Anna Taffler, a Communist activist and a Russian Jewish immigrant, described how her own experience of facing eviction pushed her into organizing the unemployed. She also talked about the focus of local councils on issues like fighting for more relief and stopping evictions.
American Soldiers in the Philippines Write Home about the War
During the U.S. war in the Philippines between 1899 and 1904 (which grew out of the Spanish-American War that had erupted in 1898), ordinary American soldiers shared the nationalist zeal of their commanders and pursued the Filipino "enemy" with brutality and sometimes outright lawlessness. Racism, which flourished in the United States in this period, led American soldiers to repeatedly assert their desire "to get at the niggers." An anti-imperialist movement, which rejected annexation by the Uni
"Oh God, For One More Breath": Early 20th century Tennessee Coal Miners' Last Words
Coal mining and railroad work were the two most dangerous trades in the United States in the early 20th century. Coal miners frequently died in spectacular explosions and cave-ins that could kill dozens or even hundreds at a time. Although most testimony about coal mining disasters came from survivors and observers, the men who suffocated to death in the Fraterville, Tennessee mines in May 1902 left behind their own grim account. Trapped in the mine after an explosion and with their air rapidly
Reinforcing quantitative skills with applied research on tombstone-weathering rates.
This Journal of Geoscience Education article describes a tombstone weathering exercise that reinforces quantitative skills with applied research. The article describes an exercise designed and carried out by students in a surficial processes course. Students measured the rates of tombstone weathering, compiled and analyzed data. The complexity of the data involved in this exercise helps students demonstrate for themselves that mathematical analysis can give meaning to data.
European Starlings and Woodpeckers
In this Starting Point investigative case, students will explore niche competition and population ecology by developing plans for species density studies. They will also develop a plan to re-establish a species (the woodpecker) in an area where there are almost none left. Users can access information regarding learning goals, context for use, teaching notes and tips, teaching materials, assessment hints, references and topics covered.
This page is a portal to an in-depth exploration of integrating student peer review into introductory-level geoscience classes. It includes an introduction to the concept of peer review, reasons and methods for its use, examples of electronic peer review in a geoscience context, and extensive references. This page is part of the larger Starting Point collection.
Call to Halt the Nuclear Arms Race
Dr. Randall Forsberg is executive director of the Institute for Defense and Disarmament Studies, a think tank she founded in 1980 with the aim of reducing the risk of war and minimizing the burden of U.S. military spending. In this video segment, she describes the reach of grassroots activism at the height of 1982's national Nuclear Weapons Freeze Campaign, which called for a bilateral, verifiable halt to new production of nuclear weapons. In the interview she conducted for War and Peace in the
Is there water on Mars?
Is there liquid water on Mars? By experimenting with water as it changes state and investigating some effects of air pressure, students not only learn core ideas in physical science but can deduce the water situation on Mars by applying those concepts.
Investigating the Climate System: Weather
This activity helps students learn how to find, interpret, and describe weather data. Students learn also about drought, flooding, wind and dust storms, hurricanes, and lightning, as well as the Tropical Rainfall Measuring Mission (TRMM) satellite -- the information it provides and why that information is important.
Ask an Astronomer for Kids
This site provides answers and photos for 200 common questions about astronomy and objects in space. Topics include planets, stars, the solar system, comets, asteroids, galaxies, and the night sky.
Students will observe the behavior of termites and draw conclusions about their behavior.
Carex communis habit
Carex communis habit. For context, see: Carex communis species page and Carex Interactive Identification Key.
Longshore Drift and Depositional Landforms
This site provides animations and images showing a variety of depositional landforms resulting from longshore drift. Animations demonstrate both naturally occurring landforms and what happens when humans interrupt sediment transport processes through river and coastal engineering projects. The site also features a collection of coastal photographs. These resources can be integrated into lectures, labs or other activities.
Women of Protest: Photographs from the Records of the National Woman's Party
This site presents 448 photos documenting the National Woman's Party's push for ratification of the 19th Amendment and passage of the Equal Rights Amendment. Taken from 1875-1922, these photos include portraits of leaders and tactics used by the organization -- picketing, pageants, parades, demonstrations, and hunger strikes.
California Gold: Northern California Folk Arts from the Thirties
This is a multi-format ethnographic field collection project, undertaken during the New Deal, that includes sound recordings, still photographs, drawings, and written documents from a variety of European ethnic and English- and Spanish-speaking communities in Northern California.
Alternative discussion formats: museum exhibit design
Designing museum exhibits encourages students to think creatively and to use a wide range of thinking skills.
TÜ Loodusteadusliku hariduse lektoraadi vastavatel kursustel (Loodusteaduste visualiseerimine) osalenud õpetajate koostatud interaktiivsed mudelid bioloogiliste protsesside tundmaõppimiseks. Kuigi mudeleid ei saa lugeda lõplikult viimistletuks, on nad õppeprotsessi visualiseerimiseks asjakohased: kasvõi ideede saamiseks. Kasutajal on soovitav fail enne oma arvutisse salvestada ning vajadusel täiendada.
Gümnasist biotehnoloogia pealispinnal
Artiklis käsitletakse geenitehnoloogiaga seonduvat gümnaasiumi õppekavast põhjalikumalt, ent õpilastele lisamaterjaliks sobivalt. Selgitatakse geenidega manipuleerimise meetodeid, DNA sekveneerimist, DNA-testi molekulaarbioloogilisi aluseid, DNA paljundamist (PCR).