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Activity
Beauty and Joy of Computing

Unsolvable and Undecidable Problems

For Teachers 9th - 12th
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...
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PPT
BW Walch

Solving Linear Inequalities in Two Variables

For Teachers 9th - 10th Standards
Although graphing a linear inequality on the plane is but a few steps added onto the graphing of a linear equation, for many learners the logical leap is quite intimidating. This approachable PowerPoint presentation breaks graphing...
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Unit Plan
Benjamin Franklin High School

Saxon Math: Algebra 2 (Section 4)

For Teachers 9th - 12th Standards
This fourth of twelve units in a series continues the investigation of functions through equations and inequalities. However, the modular nature of the lessons in the section make this an excellent resource for any curriculum covering...
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Lesson Plan
Virginia Department of Education

Logic and Conditional Statements

For Teachers 9th - 11th
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...
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Lesson Plan
West Contra Costa Unified School District

Average Rate of Change

For Teachers 9th - 12th Standards
The concept of slope gets an approachable, yet theoretical, treatment in a comprehensive algebra instructional activity. The use of functional notation and problem-solving techniques keep the material rigorous, but detailed teaching...
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Workbook
Education Bureau of Hong Kong

Fundamentals

For Students 9th - 12th
"Fundamentals," the first lesson in a series of eight, introduces the basic concepts and strategies covered in a series of resources designed to teach high schoolers critical thinking skills. The worksheets and activities in this first...
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Handout
Community High School of Vermont

Habits of the Mind

For Students 6th - 12th
An informative one-page resource details the 16 Habits of Mind. Habits encourage positive problem-solving, self-awareness, creativity, and dedication—lifelong skills that can be used in both academic and social settings. 
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Learning
Mathwire

A Collection of Logic Number Puzzles on the Hundred Board

For Students 3rd - 6th Standards
What's my number? Spark mathematical thinking and have some fun with thirty number puzzles that pose a series of questions to guide learners towards number discovery. 
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Lesson Plan
West Contra Costa Unified School District

Investigating Special Right Triangles

For Teachers 9th - 12th
Scholars first investigate relationships in the side lengths of 30°-60°-90° triangles and 45°-45°-90° triangles. This knowledge then helps them solve problems later in the lesson about special right triangles.
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Lesson Plan
K20 LEARN

Reframing the Argument: Examining Argument through a New Lens

For Teachers 9th - 12th Standards
As part of a study of crafting compelling arguments, class members tackle the problem presented in Lawrence Kohlberg's "The Heinz Dilemma." After discussing the dilemma with classmates, writers draft an essay with a claim, support it...
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Unit Plan
1
1
Mathematics Vision Project

Probability

For Teachers 10th - 12th Standards
Probability, especially conditional probability, can be a slippery concept for young statisticians.  Statements that seem self-evident on the surface often require a daunting amount of calculations to explicate, or turn out to be not so...
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Lesson Plan
Willow Tree

Area of Common Geometric Figures

For Students 8th - 11th Standards
Scholars can use area formulas, but can they apply what they know about area? The lesson challenges learners to think logically while practicing finding area of shapes such as rectangles, circles, parallelograms, triangles, and other...
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Unit Plan
1
1
Mathematics Vision Project

Module 2: Systems of Equations and Inequalities

For Teachers 8th - 10th Standards
The brother-sister pair Carlos and Clarita need your class's help in developing their new pet sitting business. Through a variety of scenarios and concerns presented to the siblings, the learners thoroughly explore systems of equations...
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Lesson Plan
Illustrative Mathematics

Sum of Angles in a Polygon

For Teachers 8th - 12th Standards
How can learners use algebra to solve a geometry problem? Help learners create an equation that shows the relationship between the number of sides of a polygon and the sum of the interior angles. Students are asked to divide the...
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Lesson Plan
Willow Tree

Solving Equations and Inequalities with Absolute Value

For Students 8th - 11th Standards
The concept of absolute value can be difficult for learners to grasp. Reinforce their understanding of a basic absolute value expression and connect it to solving equations and inequalities. Scholars write two equations/inequalities to...
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Lesson Plan
West Contra Costa Unified School District

Polynomial Division

For Students 9th - 12th Standards
How do you apply the traditional division algorithm to polynomials? Here is an Algebra II activity that extends the use of the division algorithm to polynomials. After establishing the concept of long division, synthetic division and the...
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PPT
Education Bureau of Hong Kong

Fundamentals of Critical Thinking

For Students 9th - 12th Standards
Analyzing arguments is key to critical thinking. Colorful slides teach viewers how to recognize the structure of an argument, the claims, and the validity of the evidence used to support an argument. Then, provided scenarios permit...
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Activity
Teach Engineering

Egg Drop

For Teachers 6th - 8th Standards
Don't drop the ball on the resource ... drop an egg instead! A teacher-led demonstration has the class consider how to drop eggs into glasses when a tray is in the way. Hint: If you've ever seen a magician pull a tablecloth off a table,...
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Lesson Plan
American Statistical Association

Happy Birthday to . . . Two?

For Teachers 6th - 8th Standards
How many people do you need in a room before two likely share the same birthday? Scholars consider this puzzle by analyzing a set of data. They ponder how to divide the data and determine the proper size of a group for this event to...
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Lesson Plan
2
2
Workforce Solutions

Customized Resumes

For Teachers 9th - 12th
Resumes are key to the job search process. Class members examine sample job postings and critique sample resumes to understand how to craft a strong resume.
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Lesson Plan
2
2
Workforce Solutions

The Good, the Bad, and the Ugly (of Applications)

For Teachers 9th - 12th
Creating a complete and professional-looking job application is an essential part of the employment process. Class members review sample applications for an entry-level position to determine who should be interviewed for the job.
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Lesson Plan
1
1
Science 4 Inquiry

Trick or Science: Catching the Light

For Teachers 6th - 8th Standards
Your class might be surprised to learn that mirrors have been around since the first century AD! Young scientists explore reflection and refraction of light through a series of challenges. They use this knowledge to design their own...
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Lesson Plan
Arizona Department of Education

Introduction to Integers

For Teachers 5th - 7th Standards
Welcome to the backward world of negative numbers. This introductory lesson plan teaches young mathematicians that negative numbers are simply the opposite of positive numbers as they use number lines to plot and compare single-digit...
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Unit Plan
Arizona Department of Education

Area and Perimeter of Regular and Irregular Polygons

For Teachers 3rd - 6th Standards
Extend young mathematicians' understanding of area with a geometry lesson on trapezoids. Building on their prior knowledge of rectangles and triangles, students learn how to calculate the area of trapezoids and other irregular...

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