27 Amendments Overview

There have been 27 amendments added to the Constitution since its ratification over 230 years ago. Each amendment has meant big changes to our system of government, and our nation as a whole. Discover the different amendments in the National Constitution Center’s learning module.

19th Amendment: Women’s Right to Vote

In this learning module, students will trace the roots of the women’s rights movement, from early reform efforts in the 1800s to the ultimate decision to pursue voting rights. This unit explores the constitutional arguments over women’s suffrage, the historical context of the fight for suffrage over 70 years, and the tactics suffragists used to persuade state legislatures and the national government to recognize voting rights for women.

14th Amendment: Battles for Equality

The 14th Amendment wrote the Declaration of Independence’s promise of freedom and equality into the Constitution. It transformed the Constitution forever. And it’s at the heart of what many scholars refer to as America’s “Second Founding.” Even so, the 14th Amendment is the focus of many of the most important constitutional debates (and Supreme Court cases) today. In many ways, the history of the modern Supreme Court is really a history of modern-day battles over the 14th Amendment’s meaning. Nearly every constitutional case that you care about today turns on the 14th Amendment.

13th Amendment: Abolition of Slavery

Slavery was embedded into America’s fabric by the time of the ratification of the Constitution. Do you think this affected how long slavery lasted in America and how it ended? Explore the National Constitution Center’s 13th Amendment Learning Module to learn more.

Fourth Amendment: Search and Seizure

Most Americans are unaware about when and where Fourth Amendment rights are at issue. This lesson will allow students to examine the text and interpretations of the Fourth Amendment to describe key terms and ideas like searches, seizures, and privacy, as well as define some of the key debates about where the Fourth Amendment is headed in an age of technology.

Second Amendment

Students will be able to trace the historic development of the Second Amendment with help from the Common Interpretation in the Interactive Constitution and matters of debate essays, and use evidence from the readings to explore the modern interpretation of the Second Amendment.

First Amendment: Assembly and Petition

Students explore the founding era legacies of assembly and petition and how those legacies informed the creation of these often-overlooked aspects of the First Amendment. They will complete a close reading activity to compare and contrast ideas presented in the Interactive Constitution and describe the ways these rights have been interpreted by the Court and used by citizens at various points throughout U.S. history. They will evaluate the constitutionality of assembly and petition rights in the modern era through an in-class, civil dialogue addressing questions about time, place, and manner restrictions; counter-protests; protests on college campuses; and other relevant assembly and petition questions.

Freedom of Religion: Free Exercise Clause

Students will examine the protections enshrined in the First Amendment’s Free Exercise Clause. Students will use the Interactive Constitution to examine the Free Exercise Clause’s text and history and how the Supreme Court has interpreted it over time. In this lesson, students compare and contrast the questions, opinions, and dissents in a series of Supreme Court cases to define when the Free Exercise Clause does and does not limit government action.

Freedom of Religion: Establishment Clause

The First Amendment has two clauses related to religion: one preventing the government establishment of religion (the establishment clause) and the other protecting the ability to freely exercise religious beliefs (the free exercise clause). Students examine the First Amendment’s Establishment Clause: why it was included in the Bill of Rights, the issues it addresses, and how the Supreme Court has interpreted it over time.