EngageNY
An Area Formula for Triangles
Use a triangle area formula that works when the height is unknown. The eighth installment in a 16-part series on trigonometry revisits the trigonometric triangle area formula that previously was shown to work with the acute triangles....
Virginia Department of Education
Transformational Graphing
Find relationships between the structure of a function and its graph. An engaging lesson explores seven parent functions and their graphs. Learners match functions to their graphs and describe transformations.
University of North Carolina
Verb Tenses
Twelve categories of verbs exist in the future tense, ranging from simple present to future perfect progressive, but only three have a place in academic writing. Those three tenses make up the content of an informational handout that...
Mr. Nussbaum
Fort Sumter Reading Comprehension
The Battle of Fort Sumter was both the first and the least deadly battle of the American Civil War, with no soldiers lost during the lengthy bombardment. Learn more about the first shots of the Civil War with a short reading passage and...
Scholastic
Lesson 3: Essay Organizer
A three-minute exercise warms-up scholars' writing abilities in order to follow a writing process that ends in an essay. The essay's topic is a barrier and the values used to break it. Four steps include choosing a topic,...
ProCon
Electoral College
The Electoral College's role in elections is sometimes confusing and controversial. Pupils use a debate topics website to research the pros and cons of the practice to debate whether the United States should still use the Electoral...
Humanities Texas
Primary Source Worksheet: Thomas Jefferson, Message to Congress Concerning Louisiana
Proficient reading of informational text, especially primary source documents, requires practice. This message from Thomas Jefferson about the Louisiana Purchase offers readers a chance to develop these comprehension skills.
Curated OER
Math Handbook: Calculus
If only there was a reference that listed all the formulas covered in calculus. Luckily, there is. This comprehensive 197-page handbook provides formulas and explanations for all topics in AP Calculus or in a standard college calculus...
Bowland
In the Olympics, are Women Improving Faster than Men?
Will the time come when women outperform men at the Olympic Games?Scholars investigate gender differences in Olympic Games performances. They study the historical participation of women and then analyze data to determine if women will...
Inside Mathematics
Suzi's Company
The mean might not always be the best representation of the average. The assessment task has individuals determine the measures of center for the salaries of a company. They determine which of the three would be the best representation...
Shodor Education Foundation
Algebra Four
Everybody wins when you play Algebra Four. Players solve linear and quadratic equations to earn pieces on the Algebra Four game. Make a row of four pieces and you win the game. But everyone gets practice with solving equations, so really...
University of Chicago
What IS the Difference Between Sunni and Shi'ite Muslims?
The distinction between Shiite and Sunni Muslims is an often misunderstood concept, yet very important for its implications in global affairs and for a more comprehensive understanding of the religion of Islam.
Oregon State
World Map of Plate Boundaries
Young geologists piece together the puzzle of plate tectonics in an earth science lesson. Given a physical map of the world, they search for land formations that indicate the location of different types of plate boundaries.
CPALMS
Analyzing Vonnegut's View of the Future and His Commentary on the Present in Harrison Bergeron
Kurt Vonnegut's short story "Harrison Bergeron" engages adolescents with its theme about the dangers of complete societal equality. Learners complete a graphic organizer to track literary elements in the story, as well as an inference...
Macmillan Education
Organising Your Studies
What's the best way to study? Well, it depends. . . Session two of a 23-lesson life skills series focuses on a variety of study skills strategies and suggests when/why to choose one over another.
Inside Mathematics
Party
Thirty at the party won't cost any more than twenty-five. The assessment task provides a scenario for the cost of a party where the initial fee covers a given number of guests. The class determines the cost for specific numbers of guests...
Inside Mathematics
Scatter Diagram
It is positive that how one performs on the first test relates to their performance on the second test. The three-question assessment has class members read and analyze a scatter plot of test scores. They must determine whether...
Autism Speaks
Improving Sleep for Children with Autism
Sometimes learners with autism have trouble getting into routines and schedules, especially when it comes to sleep. Quickly refer to a guide that provides tips, checklists, sample schedules, and visuals to help your child become a better...
National Endowment for the Humanities
The Creation of the Bill of Rights: “Retouching the Canvas”
While the Constitutional Convention lay the foundation of the new government for the United States, the protections given under the Bill of Rights were controversial. Using documents, such as James Madison's and Thomas Jefferson's...
University of Chicago
Exercise in Conflict Resolution
How do major religions, including Judaism, Christianity, and Islam, differ in how they view the role of individual freedoms within society, the definition of morality, and the importance of politically satisfying the greater...
Dick Blick Art Materials
“Gawu” — African-influenced Tapestry
Here's a great way to combine environmental science with art. Kids use recycled materials to create their own Gawu, a tapestry made of discards. Although designed for special education classrooms, the activity is sure to engage all...
NOAA
Plankton
Dive into the world of plankton. The 17th installment of a 23-part NOAA Enrichment in Marine sciences and Oceanography (NEMO) program introduces different types of plankton. Young scientists then use what they have learned to classify...
Serendip
How Eyes Evolved – Analyzing the Evidence
Octopodes existed for hundreds of thousands of years before humans, yet our eyes share many similarities. Scholars analyze the evidence to determine if the evolution of eyes best fits a homology or analogy model. They discuss the issue...
National First Ladies' Library
Women's Lives in the Victorian Era
The lives of middle-class Victorian women were circumscribed by strict standards that governed all aspects of behavior. To gain a better understanding of the Victorian Ideals for women, class members research the life of a middle-class...