Curated OER
Circle Packing
Students identify different parts and properties of circles. In this geometry lesson, students identify the radius, diameter, semicircle and inscribed angle of a circle. They identify the tangent lines to a circle.
Curated OER
Challenge Discussion Sheet 7
In this differential worksheet, students complete eight short answer problems. Four problems are story problems. Four problems are practice problems with the equations given.
Curated OER
Investigating the properties of a circle
Students use wax paper to look at different properties of circles such as chords, tangent lines, inscribed angles, and inscribed angles in a semi-circle, as well as finding the center of the circle, and use GSP to investigate cyclic...
Curated OER
Moving On: Octagoning the Circle
Learners explore circles through the use of octagons. They inscribe a circle in a regular octagon and find the area and perimeter of the hexagon with respect to the radius of the circle. Students present their findings to the class.
Curated OER
Area Under A Curve
Young scholars investigate the concept of finding the areas under curves while examining the graphing for inscribed and circumscribed rectangles. Finally, students compute the area under the curve by using the left-hand endpoints. The...
Virginia Department of Education
High School Mathematics Geometry Vocabulary Word Wall Cards
Having a good working knowledge of math vocabulary is especially important for geometry learners. Here are 119 pages worth of wonderfully constructed definitions, constructions, formulas, properties, theorems, and postulates. This is a...
Curated OER
Task: Grain Storage
Farming is full of mathematics, and it provides numerous real-world examples for young mathematicians to study. Here, we look at a cylinder-shaped storage silo that has one flat side. Given certain dimensions, students need to determine...
Curated OER
Hammurabi's Code: What Does It Tell Us About Old Babylonia?
Students examine life in Babylonia during the time of King Hammurabi. They read and discuss excerpts of the Code of Hammurabi, participate in a simulation of advisors to the king, complete an online interactive activity, answer...
EngageNY
Secant Lines; Secant Lines That Meet Inside a Circle
Young mathematicians identify different cases of intersecting secant lines. They then investigate the case where secant lines meet inside a circle.
Curated OER
The Gettysburg Address
For this social studies worksheet, students read the Gettysburg Address. Students substitute words or phrases that have the same meanings as 10 underlined phrases from the Address.
Curated OER
A Victorian Vocabulary Challenge
Introduce your high schoolers to some tough vocabulary. No, I'm not talking about the SAT list! Revisit Victorian literature to find tricky words we still use today. Using the Visual Thesaurus, learners will preview vocabulary in a quote...
Mathematics Vision Project
Module 6: Congruence, Construction, and Proof
Trace the links between a variety of math concepts in this far-reaching unit. Ideas that seem very different on the outset (like the distance formula and rigid transformations) come together in very natural and logical ways. This unit...
EngageNY
How Do Dilations Map Angles?
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.
EngageNY
Tangent Segments
What's so special about tangents? Learners first explore how if a circle is tangent to both rays of an angle, then its center is on the angle bisector. They then complete a set of exercises designed to explore further properties and...
EngageNY
Similar Triangles in Circle-Secant (or Circle-Secant-Tangent) Diagrams
First angle measures, now segment lengths. High schoolers first measure segments formed by secants that intersect interior to a circle, secants that intersect exterior to a circle, and a secant and a tangent that intersect exterior to a...
Willow Tree
Area of Common Geometric Figures
Scholars can use area formulas, but can they apply what they know about area? The lesson plan challenges learners to think logically while practicing finding area of shapes such as rectangles, circles, parallelograms, triangles, and...
University of Virginia
Illustrating Uncle Tom's Cabin
Historical illustrations reveal more than what they are meant to portray. After reading Harriet Beecher Stowe's Uncle Tom's Cabin, high schoolers view a series of illustrations, movie posters, photographs, and book covers that exemplify...
Mathematics Vision Project
Module 2: Congruence, Construction and Proof
Construct yourself a winning geometry unit. A set of lessons introduces geometry scholars to constructions and proofs with compasses and straightedges. It also covers triangle congruence through transformations. This is the second of...
Curated OER
Hammurabi's Code: What Does It Tell Us About Old Babylonia?
Students examine Hammurabi's Code. They take on the role of his council of advisors and report their "advice" to the king. They write an essay discussing an aspect of daily life that the Code exemplifies.
Curated OER
Legend of The Lorax
Learners explore ecosystems. They read or listen to Dr. Seuss' The Lorax to draw conclusions and make predictions about the environmental impact and use of resources. They write poems about real forests and the wildlife which inhabit...
Curated OER
Geometry of Triangles - Week 6
In this triangle worksheet, students explore the characteristics of triangles. They find the area of a pentagon, lengths of the sides of a triangle and the area of a quadrilateral. This two-page worksheet contains seven problems.
Curated OER
Vocab-u-lous! Build a Fabulous Vocab
In this vocabulary instructional activity, students select the best word choice to complete the sentence. All words correspond to the theme of Memorial Day.
Curated OER
Animal Farm Chapter 8
In this Animal Farm comprehension check worksheet, learners respond to 10 short answer questions and define 4 terms pertaining to chapter 8 of Animal Farm by George Orwell in order to help them better understand the novel.
Curated OER
London Quiz 1
In this London worksheet, students answer short answer questions about the history and geography of London. Students complete 20 short answer questions.
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