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89 reviewed resources for paragraph proof

Lesson Planet

Flippin' Proofs Parallel Lines Project

For Teachers 10th - 12th Standards
Learners will "flip" for this creative way to practice writing and explaining two-column proofs about parallel lines.  As they create their masterpiece, young geometers are led to consider overall proof characteristics as well as...
1 In 1 Collection
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Vertical Angles Proof Samples

For Teachers 7th - 10th Standards
This visual, manipulative-based format for teaching geometric proofs nicely scafolds learners' development of mathematical reasoning and proof skills. This sample represents a proof of the congruence of vertical angles in four formats;...
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Paragraph Proofs

For Students 10th
In this paragraph proofs learning exercise, 10th graders solve and complete 6 different problems that include proving various types of triangles. First, they label each diagram shown. Then, students write the given information and use...
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Paragraph Proofs

For Students 10th
In this paragraph proofs worksheet, 10th graders solve and complete 6 different problems. First, they label each diagram shown. Then, students state their given information, using the given as their reasoning. In addition, they write a...
2:31
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Angle in a Semi-Circle – Proof

For Students 6th - 12th Standards
Young mathematicians observe a geometric proof using a short video. They see each part of the diagram clearly labeled and the simple math written off to the side. The new knowledge helps them solve additional problems independently.
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Proofs

For Students 8th - 11th
In this geometric proof worksheet, students compose 20 triangle congruency proofs. Students will decide if there is enough information in problems 1-6 to prove if any triangles are congruent. In problems 17 to 20, students use given...
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Proofs Of The Pythagorean Theorem?

For Students 8th Standards
Even U.S. President James Garfield had his own proof of the Pythagorean Theorem! Pupils consider three different attempts at a geometric proof of the Pythagorean Theorem. They then select the best proof and write paragraphs detailing...
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Geometric Figures

For Teachers 10th - 12th Standards
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...
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Pythagorean Theorem Proof

For Teachers 10th
Tenth graders investigate the Pythagorean Theorem. Then they type up a formal paragraph proof of a proof of their choice.
1 In 1 Collection
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Right Triangles Inscribed in Circles I

For Teachers 9th - 10th Standards
One of the basic properties of inscribed angles gets a triangle proof treatment in a short but detailed exercise. Leading directions take the learner through identifying characteristics of a circle and how they relate to angles and...
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Comparing the Ratio Method with the Parallel Method

For Students 9th - 10th Standards
Can you prove it? Lead your class through the development of the Side Splitter Theorem through proofs. Individuals connect the ratio and parallel method of dilation through an exploration of two proofs. After completing the proofs,...
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Euclidean Direct Proofs

For Teachers 9th - 10th
Learning how to prove theorems in geometry can be challenging. This resource explains what a proof is, and the different styles for proofs. It also contains links to web-based practice problems that help guide learners though example...
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Company Logo

For Teachers 9th - 11th Standards
Modern advertising takes a geometric turn with this unit. The final assessment activity leads pupils through the logical analysis of a fictional logo, including the development of a paragraph proof. The wealth of resources leading up to...
2 In 2 Collections
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Are They Similar?

For Teachers 9th - 11th Standards
Learners separate things that just appear similar from those that are actually similar. A diagram of triangles is given, and then a variety of geometric characteristics changed and the similarity of the triangles analyzed. Because the...
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Paragraph Proofs

For Teachers 9th - 12th
Students explore the concept of paragraph proofs. In this paragraph proofs lesson, students make flow charts of the process of getting ready for school. Students convert the flow chart to a paragraph proof. Students use geometric...
1 In 1 Collection
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Geometry Project

For Students 9th - 12th Standards
Proofs are usually an intimidating assignment. An engaging lesson focused on geometric proofs may reduce the anxiety! Pupils choose between several triangle proofs to complete and work on completing them. The assignment also gives a...
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Geometric Proof and Angles

For Students 10th
In this geometry instructional activity, 10th graders write two-column and paragraph proofs to prove angle pair relationships.  The one page instructional activity contains five problems.  Answers are not included. 
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Module 6: Congruence, Construction, and Proof

For Teachers 8th - 10th Standards
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...
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Inscribed Angles

For Students 10th
In this inscribed angles worksheet, 10th graders solve 13 various types of problems related to inscribed angles in geometry. First, they identify a circle illustrated and each arc of the circle. They, students find the measure of each...
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Geometric Proof

For Students 10th
In this geometry activity, 10th graders write two-column, flow and paragraph proofs to justify the arguments involving angle measure.  The one page activity contains nine problems.  Answers are not provided. 
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Joining Two Midpoints of Sides of a Triangle

For Teachers 9th - 11th Standards
Without ever using the actual term, this exercise has the learner develop the key properties of the midsegment of a triangle. This task leads the class to discover a proof of similar triangles using the properties of parallel lines cut...
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Practice 3-2: Developing Proofs

For Students 9th - 11th
In this proof worksheet, students explore lines and segments to determine which are parallel. They use postulates or theorems to justify their answer. Students develop proofs. They use algebra to determine angle measurements of...
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Tornado!

For Teachers 6th - 8th
Students create tornado proof buildings.  In this weather lesson, students review tornadoes, discuss creation of tornado proof buildings, and learn about the Fujita Scale of Tornado Intensity.  Students research tornado proof buildings,...
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Skills and Applications

For Students 10th
In this skills and applications instructional activity, 10th graders solve and complete 22 various types of problems. First, they use a compass and straightedge to construct a reflection of each figure. Then, students find the number of...

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