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Lesson Plan
Curated OER

Lesson 3: Graphing Ordered Pairs on a Coordinate Plane

For Teachers 8th - 12th
Students study how to graph ordered pairs on a coordinate plane. After a teacher demonstration, students work together to complete problems. They explain and share their answers. As an activity, they solve a mystery story about the...
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Lesson Plan
Curated OER

Lesson Plan One: Points, Lines, Rays

For Teachers 5th
Fifth graders explore basic geometric terms. Pupils draw a physical picture of a scene that illustrates at least five geometric terms. Partners exchange drawings and locate the illustration of geometric terms in the drawing.
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Lesson Plan
Curated OER

Geometry: Tessellations

For Teachers 2nd - 3rd
Learners create tessellations with computer software while applying their knowledge of reflections, rotations, and translations.
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Lesson Plan
Curated OER

Lesson 9-3 Practice B: Composite Figures

For Teachers 9th - 12th
In this composite figures worksheet, students solve 11 short answer problems. Students find the area of figures composed of various polygons. Students find the area of each figure given a sketch of the figure with various measurements...
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Worksheet
Curated OER

Challenge: Skills and Applications Lesson 1.3

For Students 10th - 12th
In this skills instructional activity, learners explain the Segment Addition Postulate, provide examples and counter examples and determine congruent line segments.  This one-page instructional activity contains 11 multi-step problems.
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Worksheet
Curated OER

Challenge: Skills and Applications Lesson 2.2

For Students 9th - 12th
In this truth tables learning exercise, students solve 5 short answer problems. Students make a truth table for five conditional statements.
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Worksheet
Curated OER

Challenge: Skills and Applications Lesson 3.3

For Students 9th - 12th
In this angle measures instructional activity, students solve 9 short answer problems. Students find values for x and y given two parallel lines cut by a transversal. Students use alternate interior, supplementary, and exterior angles to...
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Lesson Plan
Curated OER

Identify Polygons: Algebra/Geometry Institute

For Teachers 8th
Eighth graders classify geometric figures.  In this polygon lesson, 8th graders identify given geometric figures.  They compare and contrast different polygons.  Students name line segments, identify parallel lines, and...
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Lesson Plan
Curated OER

Classifying Polygons

For Teachers 1st - 3rd
Students study polygons. In this math lesson, students play a game in which they learn the classification system for polygons. Students identify the properties of quadrilaterals.
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Lesson Plan
Curated OER

If You Can’t Stand the Heat

For Teachers 9th - 12th
Students design and build their own solar cooker. In this math lesson, students determine the relationship between the angles of the sun, reflection and cooking time of the solar cooker. They test their project, collect data and...
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Lesson Plan
Curated OER

Finding Remainders in Pascal's Triangle

For Teachers 5th - 6th
Students use clock arithmetic to find remainders. In this patterns in math lesson, students explore the relationship between clock arithmetic and remainders using a computer applet. Students also identify patterns in Pascal's triangle...
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Lesson Plan
Curated OER

A Perpendicular Pilgrimage

For Teachers 9th
Ninth graders design a safe passage through a 2-D obstacle. In this geometric math lesson, 9th graders engage in a hands on activity to better understand the concept of geometric and algebraic perpendicularity. Students will work in...
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Lesson Plan
Curated OER

It Counts

For Teachers K - 2nd
Students explore one to one number correspondence. In this early math lesson, students make observations about and classify plants in order to gain an understanding of using numbers to describe their world.
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Lesson Plan
Curated OER

Lesson Plan on Airplane Landing

For Teachers 10th - 12th
Students analyze airplane landing and cause for running off the runway. In this geometry lesson, students investigate why airplanes run off the runway and write a report on it. They examine temperature, pressure, altitude, tail...
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Lesson Plan
EngageNY

How Do 3D Printers Work?

For Teachers 9th - 10th Standards
If we stack up all the cross sections of a figure, does it create the figure? Pupils make the connection between the complete set of cross sections and the solid. They then view videos in order to see how 3D printers use Cavalerie's...
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Lesson Plan
EngageNY

Properties of Tangents

For Teachers 9th - 12th Standards
You know about the tangent function, but what are tangent lines to a circle? Learners investigate properties of tangents through constructions. They determine that tangents are perpendicular to the radius at the point of tangency,...
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Lesson Plan
EngageNY

Triangle Congruency Proofs (part 1)

For Teachers 9th - 10th Standards
Can they put it all together? Ninth graders apply what they know about proofs and triangle congruence to complete these proofs. These proofs go beyond the basic triangle congruence proofs and use various properties, theorems, and...
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Lesson Plan
EngageNY

Unknown Angle Proofs—Proofs with Constructions

For Teachers 9th - 10th Standards
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...
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Lesson Plan
EngageNY

The Inscribed Angle Alternate – A Tangent Angle

For Teachers 9th - 12th Standards
You know the Inscribed Angle Theorem and you know about tangent lines; now let's consider them together! Learners first explore angle measures when one of the rays of the angle is a tangent to a circle. They then apply their...
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Lesson Plan
EngageNY

Construct an Equilateral Triangle (part 1)

For Teachers 9th - 10th Standards
Drawing circles isn't the only thing compasses are good for. In this first installment of a 36-part series, high schoolers learn how to draw equilateral triangles by investigating real-world situations, such as finding the location of a...
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Lesson Plan
EngageNY

The Side-Angle-Side (SAS) and Side-Side-Side (SSS) Criteria for Two Triangles to Be Similar

For Students 9th - 10th Standards
Playing with mathematics can invoke curiosity and excitement. As pupils construct triangles with given criteria, they determine the necessary requirements to support similarity. After determining the criteria, they practice...
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Lesson Plan
EngageNY

Special Relationships Within Right Triangles—Dividing into Two Similar Sub-Triangles

For Students 9th - 10th Standards
Why are right triangles so special? Pupils begin their study of right triangles by examining similar right triangles. Verifying through proofs, scholars recognize the three similar right triangles formed by drawing the altitude. Once...
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Lesson Plan
EngageNY

The Definition of Sine, Cosine, and Tangent

For Students 9th - 10th Standards
Introduce your classes to a new world of mathematics. Pupils learn to call trigonometric ratios by their given names: sine, cosine, and tangent. They find ratios and use known ratios to discover missing sides of similar...
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Lesson Plan
EngageNY

Trigonometry and the Pythagorean Theorem

For Students 9th - 11th Standards
Ancient Egyptians sure knew their trigonometry! Pupils learn how the pyramid architects applied right triangle trigonometry. When comparing the Pythagorean theorem to the trigonometric ratios, they learn an important connection that...

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