his task is intended as a classroom activity. Student pool the results of many repetitions of the random phenomenon (rolling dice) and compare their results to the theoretical expectation they develop by considering all possible outcomes of rolling two dice. This gives them a concrete example of what we mean by long term relative frequency.

Close readings of the major British Romantic poets (Blake, Wordsworth, Coleridge, Byron, Scott, Shelley, Keats), perhaps including some of the period's important fiction writers (e.g. Mary Shelley, Walter Scott). Some attention to literary and historical context. Lecture/discussion; at least two papers.

This art history video discussion examines Eugene Delacroix's "Liberty Leading the People", oil on canvas 1830 (Musee du Louvre, Paris).

Students explore whether rooftop gardens are a viable option for combating the urban heat island effect. Can rooftop gardens reduce the temperature inside and outside houses? Teams each design and construct two model buildings using foam core board, one with a "green roof" and the other with a black tar paper roof. They measure and graph the ambient and inside building temperatures while under heat lamps and fans. Then students analyze the data and determine whether the rooftop gardens are beneficial to the inhabitants.

The Civilian Conservation Corps (CCC) was one of the most popular of Franklin Delano Roosevelt’s New Deal programs. The CCC’s mission was to conserve the natural resources of the United States while providing relief to the poor and encouraging the recovery of the economy. The program provided employment to enrolllees and financial support to their families during the Great Depression, while developing much needed conservation and infrastructure projects for a country that had been devastated by over logging and farming practices that contributed to soil erosion. Known as "Roosevelt's Tree Army," the program improved national and state parks, prevented erosion, controlled flooding, and assisted with natural disaster recovery. The unemployment rate during the Great Depression was estimated at twenty-five percent, which left a generation of young men without employment or opportunities. During its operation from 1933 to 1938, the CCC employed close to three million previously unemployed young men, although it disproportionately assisted whites. This exhibition tells the stories of the CCC’s administration and controversial policies, the men who joined, and the contributions its projects made to the history of conservation in the United States. This exhibition was created as part of the DPLA's Public Library Partnerships Project by collaborators from Mountain West Digital Library. Exhibition organizer: Anna Neatrour.

The topic of photosynthesis is a fundamental concept in biology, chemistry, and earth science. Educational studies have found that despite classroom presentations, most students retain their naive idea that a plant's mass is mostly derived from the soil, and not from the air. To call students' attention to this misconception, at the beginning of this lesson we will provide a surprising experimental result so that students will confront their mental mistake. Next, we will help students better envision photosynthesis by modeling where the atoms come from in this important process that produces food for the planet. This lesson can be completed in 50-60 minutes, with the students working on in-class activities during 20-25 minutes of the lesson. As a prerequisite, students need an introductory lesson on photosynthesis, something that includes the overall chemical equation. If students have already studied the intracellular photosynthetic process in detail, this video can still be very helpful because students often miss the big picture about photosynthesis. Materials needed include red, white and black LEGO bricks (described in downloadable hand-out) or strips of red, white and black paper plus paper clips (directions provided in downloadable hand-out). In addition to class discussions, the major in-class activity of this video involves the students' modeling with LEGO bricks or colored paper where the atoms come from in photosynthesis.

This art history video discussion examines the "Rosetta Stone", 196 B.C.E., granite (British Museum, London).

This art history video discussion examines Rosso Fiorentino's "The Dead Christ with Angels", c. 1524-7, oil on panel (Museum of Fine Arts, Boston).

Students learn about rotary encoders and discover how they operate through hands-on experimentation. Rotary encoders are applied in tools to determine angle measurements and for translations of angular motion. One common rotary encoder application is in a computer's ball-type mouse—the ball itself is a type of rotary encoder. In this activity, students experiment with two rotary encoders, including one from a computer mouse and one created using a LEGO® MINDSTORMS® NXT kit. They collect data to define and graph the relationship between the motion of the rotary encoder and its output.

This short video and interactive assessment activity is designed to teach second graders an overview of rounding decimal numbers.

This short video and interactive assessment activity is designed to give fifth graders an overview of rounding decimal numbers.

This short video and interactive assessment activity is designed to give fourth graders an overview of rounding decimal numbers.

Students explore orbit transfers and, specifically, Hohmann transfers. They investigate the orbits of Earth and Mars by using cardboard and string. Students learn about the planets' orbits around the sun, and about a transfer orbit from one planet to the other. After the activity, students will know exactly what is meant by a delta-v maneuver!

This short video and interactive assessment activity is designed to teach second graders about rounding to the nearest 2 decimal places, or the hundredths place.

An exploration of the changing role of the monarchy in British politics and culture, beginning with the accession of the House of Hanover (later Windsor) in 1714. The dynasty has encountered a series of crises, in which the personal and the political have been inextricably combined: for example, George III's mental illness; the scandalous behavior of his son, George IV; Victoria's withdrawal from public life after the death of Prince Albert; the abdication of Edward VIII; and the public antagonism sparked by sympathy for Diana, Princess of Wales. In addition to readings, materials include portraits, news footage, and films.

Simple and compound machines are designed to make work easier. When we encounter a machine that does not fit this understanding, the so-called machine seems absurd. In this lesson, the cartoons of Rube Goldberg are introduced and engage the students in critical thinking about the way his inventions make a simple task even harder to complete. As the final lesson in the simple machines unit, the study of Rube Goldberg machines can help students evaluate the importance and usefulness of the many machines around them.

This art history video discussion looks at Peter Paul Rubens' "The Consequences of War", 1638-39, oil on canvas (Palatine Gallery, Palazzo Pitti, Florence).

This art history video discussion examines Peter Paul Rubens' "Arrival (or Disembarkation) of Marie de Medici at Marseilles",1621-25, oil on canvas, 394 x 295 cm (Musee du Louvre, Paris).