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Lesson Plan
Curated OER

Indirect Proof and Inequalities in one Triangle

For Teachers 10th
In this geometry worksheet, 10th graders complete an indirect proof and order the sides or angles of a triangle. Also, students determine if a triangle can have sides with the given lengths. The two page worksheet contains twelve...
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Worksheet
Curated OER

Indirect Length Word Problems

For Students 1st
Word problems are a wonderful way to connect math and the real world. However, I've never seen a 12 centimeter-long apple tree. Aside from some odd word choices, this worksheet provides children with ten problems to solve by determining...
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Worksheet
Curated OER

Indirect Length Word Problem

For Students K - 2nd
Although the graphics on this length comparison exercise aren't great, pupils will get the idea. They read an indirect length word problem, which asks them to compare three animals from shortest to tallest. The wording here may be...
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Performance
Radford University

REALLY Tall!

For Teachers 9th - 12th Standards
Conduct indirect measurements three ways. Working in groups, pupils come up with different ways to measure three tall objects indirectly. The teacher provides measurement information requested by the teams, and learners then calculate...
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Worksheet
Curated OER

Indirect Euclidean Proofs

For Students 10th
In this Euclidean proofs worksheet, 10th graders solve 10 different problems that include completing indirect Euclidean proofs. First, they write a statement for each of the reasons listed on the sheet of proofs. Then, students solve the...
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Lesson Plan
Curated OER

Indirect Measurement, Surveying Trigonometry

For Teachers 9th - 10th
Students measure distances using indirect measurements. In this geometry instructional activity, students apply proportion and ratios to measure heights of different objects. They differentiate between direct and indirect measurements.
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eBook
Open Oregon Educational Resources

Forest Measurements: An Applied Approach

For Students 9th - Higher Ed Standards
Geometry—it's not just for the math classroom! Learners explore the field of forestry through a mathematical lens. An instructional resource explains how forest workers collect data about trees such as height, diameter, and age using...
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Worksheet
Curated OER

Indirect Measurement

For Students 8th - 9th
In this geometry worksheet, students differentiate between direct and indirect measurements. They create a table with their findings. There are 9 questions.
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Worksheet
Curated OER

Countdown Challenge: Shadow Sleuth

For Students 7th - 8th
In this shadow sleuth worksheet, learners use proportions and indirect measurement to determine the measurement of given objects. This one-page worksheet contains three problems.
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Worksheet
Curated OER

Indirect Euclidean Proofs

For Students 7th - 8th
In this indirect Euclidean proof worksheet, students write statements supporting the reasons for a given proof. This one-page worksheet contains ten problems.
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Lesson Plan
Curated OER

Inverse (Indirect) Machines

For Teachers 9th - 12th
Students observe relationships between quantities. Students complete activities for three different classes of levers. In groups, students build each type of lever. Students identify levers in their daily surroundings. Students observe...
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Worksheet
Curated OER

Indirect Length Word Problems - Matching Worksheet

For Students 1st
First graders demonstrate their ability to compare the lengths of three objects and determine which is the longest or shortest. Pupils match the correct answer to each of the seven story problems.  All lengths are expressed in metric units.
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Lesson Plan
Curated OER

CORNER CABINET

For Teachers 9th - 10th
Ninth and tenth graders calculate the length, width, height, perimeter, area, volume, surface area, angle measures or sums of angle measures of common geometric figures. They solve problems involving scale drawings, models, maps or...
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Lesson Plan
Curated OER

Indirect Measurement with Similar Triangles

For Teachers 9th - 12th
Young scholars use similar triangles to find missing heights.  In this using similar triangles to find missing heights lesson, students use proportions to find the heights of missing side lengths.  Young scholars find the height of trees...
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Lesson Plan
Curated OER

Indirect Measurement

For Teachers 9th - 10th
Students measure and apply their knowledge of proportion to solve problems. In this geometry lesson, students measure using a meter stick, small mirror and measuring tape. They compare and contrast their measurements to objects outside...
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Worksheet
Curated OER

Direct and Inverse Variation

For Students 8th - 11th
In this direct and indirect variation worksheet, students solve 4 direct variations. Students then solve 4 indirect variations.
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Lesson Plan
Curated OER

Data Analysis

For Teachers 7th - 8th
In this data analysis worksheet, students solve and complete 4 different types of problems. First, they reduce the data provided to find the means, and graph the means in a line graph. Then, students graph the data from each mixture...
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Activity
Education Development Center

Sum of Rational and Irrational is Irrational

For Teachers 8th - 9th Standards
Sometimes the indirect path is best. Scholars determine whether the sum of a rational number and an irrational number is irrational. Reading a transcript of a conversation between classmates leads to an indirect proof of this concept.
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Instructional Video5:42
Corbett Maths

Inverse Proportion

For Students 6th - 12th
Take an indirect view of proportionality. Using a similar approach of direct variation, the resource shows how to solve inverse proportions. The video steps through finding the constant of proportionality to write the formula for the...
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Lesson Plan
Curated OER

Indirect Proof and Inequalities in One Triangle

For Teachers 10th
In this geometry worksheet, 10th graders order the sides and angles of a triangle and determine the range of the third side of a triangle given the lengths of two sides.  The one page worksheet contains sixteen questions.  Answers are...
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Lesson Plan
Curated OER

Measuring Beads

For Teachers 1st - 2nd
Students compare the weight of the students's favorite soft toys directly and then indirectly using beads.
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Worksheet
Curated OER

Mr. P's Life

For Students 7th - 10th
With only indirect information, can your mathematicians figure out how old Mr. P is? This secondary mathematics worksheet has algebra learners examining 9 pieces of information about Mr. P's life, each of which is integral to answering...
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Worksheet
Curated OER

Similar Figures

For Students 10th
In this geometry instructional activity students explore similar polygons and determine measure of missing sides and angles. Students use indirect measurement with similar triangles and determine the area and volume of similar...
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Lesson Plan
EngageNY

Modeling Using Similarity

For Teachers 8th Standards
How do you find the lengths of items that cannot be directly measured? The 13th installment in a series of 16 has pupils use the similarity content learned in an earlier resource to solve real-world problems. Class members determine...

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