Hi, what do you want to do?
National Park Service
Freedom at Antietam
Explore how the issuance of the Emancipation Proclamation affected everyday individuals in the Civil War era. Learners are given the opportunity to read and evaluate primary and secondary source material, and then to compose a writing...
Illustrative Mathematics
Applying the Pythagorean Theorem in a Mathematical Context
Participants who use this resource will apply the Pythagorean Theorem to show whether or not the shaded triangle inscribed in a rectangle is a right triangle. Once all of the sides on the shaded triangle are found, it is important that...
Curated OER
The Haunted Lift
Students read a poem and discuss how the poem could be made into a piece of drama.
Curated OER
Using Primary Source Documents in the Classroom
Students use primary documents to explore the past. They consider the source of the documents and identify and biases that the author may have held. They identify any questions about the historical event that may remain after reading the...
Curated OER
Sucking Students into an Understanding of Air Pressure and Vacuums
Students develop and test their ideas about air pressure and vacuums by conducting several investigations into the movement of fluids in tubes.
Curated OER
Property, Theft and Generosity
Students examine excerpts of Lewis and Clark's journal entries during their expedition. They identify any disputes with the Indians over land and discuss how they might have been avoided. They add entries to their journals.
Curated OER
Afghanistan Today: Civil War and Human Rights
Students examine the relationship between the United States and the Soviet Union during the Cold War. They analyze the role of religion and cultural identity in shaping governments. They also examine the United States foreign policy.
Curated OER
Afghanistan and Its Neighbors: Model Summit
Students examine the relationship between the United States and the Soviet Union during the Cold War. They discover the role of religion and cultural identity in the war in Afghanistan. They explore the arguments for and and against...
Curated OER
Taming Terrorism
Students explore different organizations working to stop terrorism. They examine international summits and their recommendations. They participate in a debate about the effectiveness of the measures proposed.
Curated OER
The Truth About Triangles And Proofs
Learners engage in a lesson plan that is about the classification of triangles and the mathematical proofs involved in working with them. They work on a variety of problems that are created by the teacher with the focus upon the...
Curated OER
The Narrative of the Life of Frederick Dou
Ninth graders explore the concept that education is related to freedom. In this human rights lesson, 9th graders read The Narrative of Frederick Douglass. Students dialogue about their readings and education as it relates to human...
Curated OER
Investigating AAS
Students investigate the theorems of ASA, AAS, AAA and ASA. In this geometry lesson, students discuss the theorems of triangles and how it is used to solve for missing sides or angles. They review how two angles are formed by two rays...
Curated OER
What Is an "Inquiry Lesson"?
Students complete inquiry projects. In this historical perspectives lesson, students conduct their own research on topical historical questions their instructors suggest. Students then locate historical evidence and analyze it to learn...
Curated OER
Combining Map and Compass
Students practice using the map and compass to find a location. In this geography instructional activity series, students identify basic requirements needed when traveling in the wilderness. They plan a healthy menu for a backpacking trip.
Curated OER
Is There Liquid Water on Mars?
Students assess whether there is liquid water on Mars by analyzing images and data. In this planetary lesson students analyze temperature and pressure graphs and hypothesize about how water could have flowed on Mars.
Curated OER
Pierre Elliott Trudeau: Memoirs
Learners watch the video "Pierre Elliot Trudeau: Memoirs," complete a vocabulary list, and participate in a discussion of the video. They explore one of Cananda's most charismatic leaders.
Curated OER
Olympics (World Celebrations)
Students recognize the meanings and symbolism of the Olympic Flag and Torch and apply this to their own feelings of the classroom by creating their own symbol/flag to represent these feelings.
Curated OER
African American Presence in Deerfield, Massachusetts (1680-1720)
Eleventh graders explore primary and secondary sources involving "everyday life" of individuals living in Deerfield at the four turns of the centuries. They learn what these characteristics reveal since the town's beginning as an English...
Curated OER
Not the Stereotypical Immigrant?
High schoolers complete a Venn diagram comparing the stereotypes of modern African immigrants to those of other major immigrant groups in the U.S. They write an essay on their observations.
Curated OER
Music And Violence: What Message is Music Promoting To Our Youth
Students analyze several pieces of music and videos to examine how popular musicians and their music affect us as individuals and as a society. The perception of society's ideals, hypocrisy in government, and injustice are explored.
Curated OER
Following in Galileo's Footsteps
Pupils explore the findings of Galileo and research the moons of Jupiter. They construct simple telescopes, and examine the moons for themselves at a star party. They record their findings in a journal.
Curated OER
Modern Greece Fights For Ancient History
Students study the history of Ancient Greece and its society through Internet research. They investigate information about the Parthenon and its marble structures.
Curated OER
What do they want? Critical Perspectives on the 1960's in the United States
Learners determine that history is a field of study that can help them understand themselves and the people around them. By reading sources by and about people with many of the same interests and concerns that they have and learning to...
Curated OER
Who Am I?
Young scholars investigate the question "who am I?" They create an original self-portrait of themselves that incorporates written words. Students' self-portraits depict who they are.
Other popular searches
- Proof by Contradiction
- Proofs by Contradiction
- Contradiction and Math
- Contradiction Proofs
- Surd Proof by Contradiction
- Proofs of Contradiction
- Geometry by Contradiction
- Contradiction Lesson Plans
- Math Proofs by Contradiction