Inside Mathematics
Number Towers
Number towers use addition or multiplication to ensure each level is equal. While this is common in factoring, it is often not used with algebraic equations. Solving these six questions relies on problem solving skills and being able to...
Beauty and Joy of Computing
Unsolvable and Undecidable Problems
Try as you might, some functions just cannot be computed. The lab introduces the class to the possibility of unsolvable problems. The fourth lesson in a series of seven begins with a logic problem, then progresses to looking at functions...
EngageNY
Addition and Subtraction Formulas 1
Show budding mathematicans how to find the sine of pi over 12. The third instructional activity in a series of 16 introduces the addition and subtraction formulas for trigonometric functions. Class members derive the formulas using...
EngageNY
More About Similar Triangles
Determine whether two triangles are similar. The lesson presents opportunities for pupils to find the criterion needed to show that two triangles are similar. Scholars use the definition of similarity to find any missing side...
Code.org
Cracking the Code
Scholars learn how to crack secret codes as they continue reading from the Blown to Bits and try to crack the random substitution cipher. They also begin learning about the Vigenere cipher.
Virginia Department of Education
Logic and Conditional Statements
If there is a conditional statement, then there is a hypothesis and conclusion. Pupils learn how to identify the parts of conditional statements. Class members continue to work with conditional statements and rewrite them in their many...
Virginia Department of Education
Lines and Angles
Explore angle relationships associated with transversals. Pupils construct parallel lines with a transversal and find the measures of the angles formed. They figure out how the different angles are related before constructing...
Heritage Foundation
Crime and Punishment
You wouldn't give someone a 10-day timeout for eating a piece of candy. The US government, too, does not believe in unreasonable punishment. A variety of exercises exploring the clauses of the US Constitution prompts class members to...
College Board
AP® Psychology: Teaching Statistics and Research Methodology
Psychologists use statistics? Scholars investigate the research behind the methodology of statistical analysis. Using hands-on practice, case-studies, and scatterplots, they complete various tasks to understand the very roots of high...
Judicial Learning Center
Your Day in Court
Whether out of choice or necessity, people want to know what will happen on a typical day in court. A helpful lesson walks scholars in the field of criminology through the trial process from opening statements to the final verdict.
Rube Goldberg
Rube Goldberg's Simple Normal Humdrum School Day
If you're going to build a machine, you might as well make it interesting and amusing. A set of eight lessons and activities introduces simple machines using Rube Goldberg machines. A culminating project challenges techies to create and...
American Museum of Natural History
Optical Illusions and How They Work
Illusions are what your mind makes them. Learners view several optical illusions. After each illusion the resource describes what is seen and the potential connection to evolution of the brain. Illusions include seeing different objects...
EngageNY
The Painted Essay for Opinion Writing: Developing a Conclusion and Adding Linking Words
Let's get colorful! Scholars use the Painted Essay technique to analyze and color code the conclusion of a model essay. Working in small groups, pupils then write a conclusion paragraph for their draft editorials about offshore...
Curated OER
Measurable You!
Conduct guided experiments and discussions while collecting anthropometric measurements. Your class will explore impact of experimental errors in a scientific system, and explain their observations/findings in writing. An introduction to...
Curated OER
Identifying Text Structure
Work on identifying text structure with this thorough worksheet. After studying a diagram depicting six different text structures (compare/contrast, spatial, chronological, problem and solution, cause and effect, and order of...
Curated OER
Sentence Completion 13: High-Intermediate Level
Foreshadow, recant, impulsive are a few of the words your pupils must know to correctly respond to the eight problems on a sentence completion worksheet. The detailed answer key provides insight into the logic and strategies learners can...
National Endowment for the Humanities
Lesson 3: Britain, Napoleon, and the American Embargo, 1803–1808
While the French were once the allies of Americans, the Napoleonic Wars saw the United States almost drawn into a war with its one-time friend. Wars in Europe threatened to draw in the early republic. A primary source-based activity...
Illustrative Mathematics
Block Scheduling
If a random sample determines that 45% of students favor block scheduling, is it possible that the actual percentage might be 50% or 60%? In this task, learners use data from a computer-generated simulation to determine the plausibility...
Curated OER
Connecting Algebra and Geometry Through Coordinates
This unit on connecting algebra and geometry covers a number of topics including worksheets on the distance formula, finding the perimeter and area of polynomials, the slope formula, parallel and perpendicular lines, parallelograms,...
Shmoop
ELA.CCSS.ELA-Literacy.W.11-12.1
Focus on writing argument essays with your high schoolers. The lesson suggested here focuses on The Jungle, by Sinclair Lewis; however, the idea could be adapted for other texts. Check out the quick quiz provided at the end of the...
Illustrative Mathematics
Dilating a Line
High School geometers verify through experimentation certain properties about dilations. This multi-step problem challenges them to construct examples of dilations to verify specific facts, the final step provides an opportunity to more...
Curated OER
Seeing Dots
Your algebra learners interpret algebraic expressions, in order to compare their structures, using a geometric context. They also discern how the two expressions are equivalent and represent a pattern geometrically and algebraically.
Mathematics Vision Project
Similarity and Right Triangle Trigonometry
Starting with similar triangles and dilation factors, this unit quickly and thoroughly progresses into the world of right triangle features and trigonometric relationships. Presented in easy-to-attack modules with copious application...
iCivics
Power Play
Should states or the federal government have more power? With this fantastic online interactive, your pupils will be charged with the task of identifying arguments that support either federal or state power.
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