In this geometry lesson, 10th graders break down a circle and identify the different parts. They discuss chords, diameter, radius, circumference, major and minor segment. There are 42 problems broken down into 5 different sections.

Discover the results of reflecting an image. Learners use transparency paper to manipulate an image using a reflection in this fourth lesson of 18. They finish by reflecting various images across both vertical and horizontal lines.

Start simple by using a shape-partitioning worksheet. Scholars begin by segmenting basic shapes in halves and quarters. On the second page, they move on to more complex shapes, such as a heart and a cross, also partitioning them in half...

Logical thinking is at the forefront of this jam-packed lesson, with young mathematicians not only investigating geometric concepts but also how they "know what they know". Through each activity and worksheet, learners wrestle with...

Make all the ratio representations fit together. The 15th segment in a series of 29 presents ratio problems to solve. Scholars use a variety of representations to respond to the questions. The problem set has pupils show how the...

Your learners collaboratively find the lines of symmetry in an equilateral triangle using rigid transformations and symmetry. Through congruence proofs they show that they understand congruence in terms of rigid motions as they...

Given the lines of symmetry in an equilateral triangle, your learners find where the pre-image vertices are mapped onto the new image. They explore the properties of equilateral triangles, the impact of reflections, and the...

Provide your emerging mathematicians with the tools to learn as they incorporate auxiliary lines to solve unknown angle proofs in this continuing segment. They decipher information from a diagram to uncover the missing pieces and...

An intersection is more than just the point where lines intersect; explain this and the meaning of the intersection to your class. The 26th segment in a 33-part series uses graphing to solve systems of equations. Pupils graph linear...

Students examine how various segments of the American population viewed the Emancipation Proclamation. They read the Emancipation Proclamation, analyze key terms and statements in the document, and participate in a debate.

Students get an in-depth look at how our checks and balances system helps maintain the separating of powers between the three branches of government. They use current event head lines and insert them into he appropriate space on the...

"I all alone beweep my outcast state." After a discussion of the "Shakespeare in American Life" segment in which Maya Angelou's relates her reaction to Sonnet 29, class groups create and perform a scene about an outcast that includes the...

Challenge your class to reevaluate preconceived notions about government with this political cartoon analysis. An image presents a clear example of irony, in which a disgruntled American complains about his government, yet fails to see...

How does the Federal Open Market Committee work to formulate the nation's monetary policy in the United States? As the second segment of a lesson plan on the role of the Fed in setting monetary policy, class members will learn about open...

What does it take to show two triangles are similar? The 11th segment in a series of 16 introduces the AA Criterion for Similarity. A discussion provides an informal proof of the theorem. Exercises and problems require scholars to apply...

Which dot am I? Pupils create dot plots to represent sample data through the use of frequency tables. The third segment in a series of 22 asks individuals to analyze the dot plots they created. The scholars translate back and...

How does Oliver Twist, the novel written by Charles Dickens, compare with its screenplay adaptation? Although the activity doesn't require learners to have read the novel, the similarities and differences of the highlighted passages...

Remember all those credit card tables lined up on your college campus? So alluring and dangerous, if you don't know what you're doing. Prepare your pre-college attendees for life by offering a lesson on credit management. They discuss...

Pupils produce paragraphs with planning and precision with the four-square writing method, which allows learners to organize the topic, supporting, and summary sentences of their paragraphs. 

How can you draw a number? A set of questions takes learners through the reasoning for why a geometric construction can be drawn to represent the square root of a number. An interactive helps visualize the construction.

The key to understanding is making connections. Scholars explore angle dilations using properties of parallel lines. At completion, pupils prove that angles of a dilation preserve their original measure. 

Not all linear functions are linear transformations — show your class the difference. The first lesson plan in a unit on linear transformations and complex numbers that spans 32 segments introduces the concept of linear transformations...

Use the graphs of the trigonometric functions to set the stage to inverse functions. The lesson reviews the graphs of the basic trigonometric functions and their transformations. Pupils use their knowledge of graphing functions to model...

Develop a more precise definition of similar. The lesson begins with an informal definition of similar figures and develops the need to be more precise. The class learns about dilations and uses that knowledge to arrive at a...