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Worksheet
Mathed Up!

Ratio

For Students 5th - 7th Standards
Reinforce math skills with an eight-page exercise comprised of 15 problems covering the concept of ratios. 
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Assessment
Mathed Up!

Completing the Square

For Students 9th - 12th Standards
Learners review how to use the completing-the-square method to identify maximum and minimum values of a quadratic function by watching a video. They see how the vertex form relates to the extreme values of a quadratic function, and use...
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Interactive
CK-12 Foundation

Identifying Sets of Pythagorean Triples: Matching Problem

For Students 8th - 12th Standards
What sets of whole numbers make up the measures of side lengths in right triangles? Pupils use an interactive triangle to learn about Pythagorean triples. Individuals find missing values in triples and learn more about Pythagorean...
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Lesson Plan
National Security Agency

Classifying Triangles

For Teachers 4th - 8th Standards
Building on young mathematicians' prior knowledge of three-sided shapes, this lesson series explores the defining characteristics of different types of triangles. Starting with a shared reading of the children's book The Greedy Triangle,...
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Assessment
Mathed Up!

Solving Quadratics by Factorising

For Students 8th - 11th
Young mathematicians view a video on solving quadratic equations by factoring. They use this skill to complete a worksheet of practice problems — a great way to gauge understanding!
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Assessment9:45
Mathed Up!

Angles in Polygons

For Students 8th - 10th Standards
Show your class that finding angle measures is a regular calculation with a resource that provides 12 problems dealing with the measures of angles in regular polygons. Pupils use formulas for the sum of measures of angles in a polygon to...
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Assessment22:12
Mathed Up!

Reflections

For Students 9th - 11th Standards
Tracing paper is not just for art anymore — pupils can use it to find reflected images, too! Two videos show how to reflect images using tracing paper and find the reflection between the pre-image and image. Learners perform reflections...
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Assessment3:36
Mathed Up!

Two Way Tables

For Students 8th - 10th Standards
When presented with categorical data, a two-way frequency table is a great way to summarize the information. Pupils organize categorical data using a two-way table, then use the tables to determine missing data and to calculate simple...
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Lesson Plan
Utah Education Network (UEN)

It's All Just Similar to Me

For Teachers 7th - 8th
Middle schoolers explore the concept of similar figures. In this similar figures lesson, pupils calculate scale factors of similar triangles. They find missing sides of triangles, and measure angles using protractors and measure sides of...
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Worksheet
Curated OER

Classifying and Measuring Angles

For Students 5th
In this classifying and measuring angles worksheet, 5th graders use a protractor to measure 9 angles and write what kind of angle it is.
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Lesson Plan
Curated OER

Projectiles

For Teachers 3rd - 8th
Students measure the angle and distance of an arc. In this projectile lesson plan, students observe arcs created by water guns, bow and arrows, and slingshots, then work in small groups and use protractors and strings to measure the...
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Worksheet
Curated OER

New York State Testing Program for Math

For Students 7th - 8th
In this math learning exercise, students review important 7th and 8th grade concept in preparation for the New York mathematics exam. There are 16 pages in this test booklet along with 36 core review problems.
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Assessment
Mathed Up!

Sine and Cosine Rules and Area of Triangles

For Students 9th - 12th
Learners discover how to find missing sides and angles using trigonometry. Scholars first watch a video covering the Law of Sines and Cosines, as well as the area formula for a triangle. To test their knowledge, they complete a...
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Lesson Plan
Curated OER

Volume of Solid Figures

For Teachers 7th - 11th
Learners calculate volume using the correct formula and the correct unit. They explore different prisms, spheres, cubes, and cones as they calculate volume and relate it to depths in oceans.
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Instructional Video4:47
Corbett Maths

Construct a 30 Degree Angle

For Students 8th - 11th Standards
Split it down the middle. Using the tools of geometric construction, the video shows two different methods of constructing a 30-degree angle. The first method bisects an angle of an equilateral triangle. The second uses the diagonal of a...
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Lesson Plan
Curated OER

How To Use A Protractor

For Teachers 5th
Fifth graders use the SMART Board to demonstrate how to use a protractor to measure acute, obtuse, and right angles. In this protractor lesson plan, 5th graders also complete an angles worksheet.
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Lesson Plan
Curated OER

Lesson 3: Measuring Angles

For Teachers 3rd - 5th
Students use a protractor to measure angles. They classify angles by type: right angle, acute angles, and obtuse angles. Students build and draw right, acute, and obtuse angles. They discuss how do people in various professions use...
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Worksheet
Curated OER

Classifying Angles

For Students 7th
In this classifying angles worksheet, 7th graders identify and complete 17 different angles illustrated on the sheet. First, they use the key given to outline each angle. Then, students use a protractor to measure each angle and...
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Lesson Plan
Beacon Learning Center

The Fun Polygon

For Teachers 4th - 6th Standards
Junior geometers use hands-on manipulatives to explore and describe the properties and attributes of a fundamental polygon, the triangle. They learn different kinds of angles and their measurements. This well-written lesson plan provides...
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Assessment
Inside Mathematics

Graphs (2006)

For Teachers 9th - 12th Standards
When told to describe a line, do your pupils list its color, length, and which side is high or low? Use a worksheet that engages scholars to properly label line graphs. It then requests two applied reasoning answers.
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Assessment
Noyce Foundation

Ducklings

For Teachers 6th - 7th Standards
The class gets their mean and median all in a row with an assessment task that uses a population of ducklings to work with data displays and measures of central tendency. Pupils create a frequency chart and calculate the mean and median....
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Assessment
Inside Mathematics

Rugs

For Teachers 8th Standards
The class braids irrational numbers, Pythagoras, and perimeter together. The mini-assessment requires scholars to use irrational numbers and the Pythagorean Theorem to find perimeters of rugs. The rugs are rectangular, triangular,...
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Assessment
Inside Mathematics

Rhombuses

For Teachers 9th - 12th Standards
Just what does it take to show two rhombuses are similar? The assessment task asks pupils to develop an argument to show that given quadrilaterals are rhombuses. Class members also use their knowledge of similar triangles to show two...
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Worksheet
Curated OER

MAP Practice

For Students 9th - 11th
In this geometry worksheet, students create circle, line and bar graphs using different comparisons of events. There are 24 questions with an answer key.