Noted Harvard scholar Henry Louis Gates, Jr. recounts the full trajectory of African-American history in his groundbreaking series The African Americans: Many Rivers to Cross. The series explores the evolution of the African-American people, as well as the multiplicity of cultural institutions, political strategies, and religious and social perspectives they developed — forging their own history, culture and society against unimaginable odds.

Using video clips from The African Americans: Many Rivers to Cross, this collection of lesson plans addresses a wide range of themes of the African-American experience from 1500 to the present.

Students will analyze the data to see the effect of the loss and reintroduction of apex predator. Students will develop a model that shows how energy flows from different parts of Yellowstone National Park and the African Savanna in a food web. Students will construct an explanation for the patterns seen in interactions between animals in an ecosystem can change depending on populations and how people can play a role in these interactions.

Whether you're promoting science club or auditions for the school play, Adobe Express has all the tools you need to create after-school activity posters that grab students' attention. Explore free, professionally designed poster templates to get inspired, and then choose your favorite, make it your own in minutes, and share it with your school community.

In this activity about light and perception, learners discover how a flash of light can create a lingering image called an "afterimage" on the retina of the eye. Learners will be surprised when they continue to see an image of a bright object after staring at it and looking away. Use this activity to introduce learners to principles of optics and perception as well as to explain why the full moon often appears larger when it is on the horizon than when it is overhead. This lesson guide also includes a few extensions like how to take "afterimage photographs."

All biological cells require the transport of materials across the plasma membrane into and out of the cell. By infusing cubes of agar with a pH indicator, and then soaking the treated cubes in vinegar, you can model how diffusion occurs in cells. Then, by observing cubes of different sizes, you can discover why larger cells might need extra help to transport materials.

This report offers guidance – including practical advice – to education leaders and teachers in redesigning schools and classrooms by centering on learner agency, through a shift in the ownership of learning. It also provides clarity around the definition and meaning of learner agency and addresses the implications for high-quality practices in new learning models.

Video segments are drawn from the animated documentary Dead Reckoning: Champlain in America which follows the French explorer Samuel de Champlain from his first contact with the indigenous people who taught him how to explore, chart and survive in the wilds of North America. The film was produced by Mountain Lake PBS and Montreal-based Artifex Animation Studios.

In this video from Nature, geological detectives use ancient diamonds to learn more about Earth's inner layers.

This inquiry focuses on Mesopotamia and represents just a slice of what students should learn about the development of agriculture and the establishment of human civilization, so additional inquiries may be needed to fully represent the key idea.

Less can often be more—especially as students explore the theme of a work of literature through analytical writing. Writing haiku offers a student in the final draft stages of a paper an innovative way to determine if the paper says what he/she means it to say. Students can “lose their way” when writing analytical papers, resulting in wordy, tangled papers with the thesis obscured. To alleviate this problem, students create haiku that, in seventeen syllables, encapsulate the heart of the paper. Because of its brevity, haiku promotes clarity of thought. It further challenges students to work on focused revision.

Do you need proof that driving is a dangerous activity? More Americans have died in car crashes over the past 100 years than in all the wars the U.S. has ever fought combined. More than 40,000 Americans die each year on the nation's highways, most as the result of high-speed collisions. In this video segment adapted from NOVA, learn how engineers developed the air bag, an important automobile-safety device now found in most cars.
Recommended for: Grades 3-12

This is Activity 12 of a set of Level 1 activities designed by the Science Center for Teaching, Outreach, and Research on Meteorology (STORM) Project. The authors suggest that previous activities in the unit be completed before Activity 12: Air Masses, including those that address pressure systems and dew point temperature. In Activity 12, the students learn about the four main types of air masses that affect weather in the United States, their characteristic temperatures, and humidity levels as it relates to dew point temperatures. The lesson plan follows the 5E format. Initially, students discuss local weather and then examine surface temperature and dew point data on maps to determine patterns and possible locations of air masses. They learn about the source regions of air masses and compare their maps to a forecast weather map with fronts and pressure systems drawn in. During the Extension phase, students access current maps with surface and dew point temperatures at http://www.uni.edu/storm/activities/level1 and try to identify locations of air masses. They sketch in fronts and compare their results to the fronts map. Evaluation consists of collection of student papers.

Students will analyze data from an air pollution study as well as facts about air pollution and use the data as evidence to infer the effect of using natural resources (fossil fuels and mineral ore) on the atmosphere and on public health.

Students will investigate possible solutions to air pollution in relation to per capita consumption of fossil fuels. Fossil fuels being introduced as the cause, air pollution as the effect. Students will develop an argument to share concerning the solution of their choice.

In this video segment adapted from ZOOM, cast members make their own hovercraft and demonstrate how the air leaking out of a balloon can make a plastic plate hover above a table.

"Comment ajuster la position de début et de fin d'un servomoteur à l'intérieur d'une chaussette servo."

This resource is a free, downloadable audio file of short music clips to use for instruction.

This resource is a free, downloadable audio file of short music clips to use for instruction.

This video from First Alaskans Institute spotlights the Alaska Native community of St. Paul and its hands-on commitment to care for the land and animals on which it depends.