+
Worksheet
Curated OER

Quadrilaterals

For Students 10th
In this quadrilaterals worksheet, 10th graders solve and complete 10 different problems that include various types of proofs and quadrilaterals. First, they read the given information for each quadrilateral illustrated. Then, students...
+
Worksheet
Curated OER

Geometric Proofs

For Students 10th - 11th
In this geometric proofs worksheet, students prove supplementary, complimentary, and congruent angles from given models and information. This four-page worksheet contains six multi-step problems.
+
Worksheet
Curated OER

Easy Worksheet: Congruent Segments

For Students 9th - 12th
In this congruent segments learning exercise, students solve 6 short answer problems. Students justify steps in a proof by identifying the reason for various steps. Students justify steps of proofs using the transitive property,...
+
Worksheet
Curated OER

Geometric Proofs

For Students 10th - 11th
In this geometric proof worksheet, students use geometric theorems and rules to prove given statements. They prove that given lines and angles are similar. This five-page worksheet contains ten problems.
+
Worksheet
Curated OER

Proofs with Triangles

For Students 9th - 12th
In this geometry worksheet, students prove triangle congruence by making statements with reasons and concluding with the AAS or HL theorem. There are 2 proofs.
+
Worksheet
Curated OER

Circle Proofs

For Students 10th
In this circle proofs worksheet, 10th graders complete 4 different problems that include circle proofs. They respond to each of the questions that deal with circle proofs. Then, students read the given information and use the circle...
+
Lesson Plan
Alabama Learning Exchange

Triangle Area: No Height? Use the Sine

For Students 9th - 12th Standards
No height? No problem! Learners use their knowledge and a little help from GeoGebra to develop the Law of Sines formula. The Law of Sines helps to determine the height of triangles to calculate the area.
+
Lesson Plan
Curated OER

Investigation-Reasoning and Proof

For Teachers 3rd
Third graders determine the outcome of each of the following situations and justify their findings: even number + even number = ?, even number + odd number = ?, odd number + odd number = ?, and odd number + even number = ?.
+
Lesson Plan
Curated OER

Tornado!

For Teachers 6th - 8th
Students create tornado proof buildings.  In this weather instructional activity, students review tornadoes, discuss creation of tornado proof buildings, and learn about the Fujita Scale of Tornado Intensity.  Students research...
+
Worksheet
Curated OER

Why do Stars Rise in the East?

For Students 8th - 10th
In this stars rise in the east worksheet, students use geometry to show how the Earth rotates from west to east and why celestial bodies appear to rise in the east and set in the west. Students draw a figure and label given points in...
+
Worksheet
Curated OER

Euclidean Proofs involving Triangles and Circles (Congruency Proofs)

For Students 10th
In this geometry worksheet, 10th graders focus on Euclidean proofs involving triangles and circles.  The eight page worksheet contains eight proofs.  Solutions are not provided. 
+
Worksheet
Curated OER

Proofs Involving Congruent Angles

For Students 11th - 12th
In this congruent triangle worksheet, students write proofs to support characteristics of congruent triangles. This one-page worksheet contains ten problems.
+
Worksheet
Curated OER

Snell's Law Proof

For Students 12th - Higher Ed
In this proof worksheet, students use differentiation and the low of refraction to prove that the path of minimum time occurs when dt/dx = 0.  The complete solutions is provided.
+
PPT
Curated OER

The Four-Color Problem: Concept and Solution

For Teachers 8th - 12th Standards
Take a walk through time, 1852 to 1994, following the mathematical history and development of the Four-Color Theorem. Learners take on the role of cartographers to study an imaginary world of countries that need to be...
+
Lesson Plan
Curated OER

Number Theory

For Teachers 8th - 12th
Learners explore the concept of number theory. They discuss an assortment of number theory topics such as prime numbers, composite numbers, GCF, modular arithmetic, and others in a lecture style discussion. Pupils view videos about these...
+
Lesson Planet Article
Curated OER

Teach Surface Area and Volume in the Most Engaging Way!

For Teachers 6th - 8th Standards
Build a Zarcon-proof home as a math activity that will provide tremendous advantages for engagement, for differentiation, and for mastery of concepts. This activity focuses specifically on surface area and volume using mathematical...
+
Lesson Plan
Curated OER

Quilt Patch Proof

For Teachers 6th - 10th
Students construct a convincing argument that the same amount of fabric is needed for each color of quilt being made in a specific design. They justify the relationship between vertical angles and the sum of the interior angles. Students
+
Lesson Plan
Curated OER

Build an Earthquake-Proof Structure

For Teachers 6th
Sixth graders create straw structures and experiment to see how they would withstand an earthquake.  In this Earthquake lesson, 6th graders use increasing vibrations and record the effects on their straw structures.  Students...
+
Worksheet
Curated OER

Who Dun It?

For Students 9th - 12th
In this proofs by contradiction worksheet, students solve 1 word problem about a crime.  Students use proof by contradiction to determine the criminal in the word problem.
+
Worksheet
Curated OER

Where are the mistakes?

For Students 1st
For this editing worksheet, 1st graders read, proof and edit fifteen sentences for mistakes. Students correct each mistake found and rewrite each sentence grammatically correct.
+
Instructional Video16:20
2
2
Flipped Math

Prove Triangles Similar

For Students 9th - 12th Standards
Show more than one way to prove similarity. Scholars learn three different methods to show two triangles are similar, Angle-Angle, Side-Side-Side, and Side-Angle-Side. Pupils practice applying these methods to determine whether two given...
+
Lesson Plan
EngageNY

Circles, Chords, Diameters, and Their Relationships

For Teachers 9th - 10th Standards
A diameter is the longest chord possible, but that's not the only relationship between chords and diameters! Young geometry pupils construct perpendicular bisectors of chords to develop a conjecture about the relationships between chords...
+
Instructional Video11:57
2
2
Flipped Math

Side Splitter Theorem

For Students 9th - 12th Standards
Apply perspective to similarity. Individuals learn about the Side Splitter Theorem by looking at perspective drawings. Pupils use the theorem and its corollary to find missing lengths in figures. Next, they practice using the theorem and...
+
Lesson Plan
Virginia Department of Education

Pythagorean Theorem

For Students 8th Standards
Investigate the meaning of the Pythagorean Theorem through modeling. After comparing the area of the square of each side, individuals cut triangles and squares to facilitate the comparison.

Other popular searches