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Interactive
CK-12 Foundation

Proportions Using Cross-Multiplication: Proportions Using Cross Product

For Students 6th - 8th Standards
Don't get it crossed—the resource is a great one. Scholars read and watch a video that explains proportions and cross products. They then use an interactive to determine that cross products are equal and answer a set of challenge...
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Worksheet
Curated OER

Applications of the Cross Product and Dot Product

For Students 9th - 12th
In this cross product and dot product worksheet, high schoolers solve 2 problems including finding the magnetic field between 2 poles of a magnet and determining angles between vectors in a word problem about television watching given a...
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Lesson Plan
Curated OER

Study Buddies - Proportions

For Teachers 6th - 7th
Middle-schoolers solve various problems related to proportions. They write ratios in word form and then, replace the words with numbers. Pupils also write an equation in which they will cross-multiply to solve the proportion. This is an...
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Worksheet
Curated OER

Math 212: Dot Product and Cross Product

For Students Higher Ed
In this dot product worksheet, students consider vectors, find the value of an angle, and confirm the area of a given parallelogram. This two-page worksheet contains three problems.
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Worksheet
Curated OER

Leveled Problem Solving Solving Proportions Using Cross Products

For Students 4th - 7th
For this solving proportions using cross products practice worksheet, students sharpen their problem solving skills as they solve 6 story problems.
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Worksheet
Curated OER

Rational Numbers

For Students 6th - 7th
In this rational numbers worksheet, students solve and complete 25 different problems that include identifying numerous types of rational numbers. First, they place a greater than, less than or equal to symbol between the fractions to...
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Worksheet
Curated OER

Math 224 Spring 2004: Dot Product

For Students Higher Ed
In this dot product worksheet, students consider two vectors and compute the dot product and cross product of the given vectors. This two-page worksheet contains four problems.
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Activity
Lincoln Public Schools

Cereal Box Project

For Teachers 4th - 8th Standards
Challenge your class with this fun and engaging engineering design project. The goal, to create a brand new cereal complete with a list of ingredients, a name and logo, and a box to hold it in. Starting with a survey to determine the...
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Worksheet
Curated OER

Using Proportions

For Students 10th
In this using proportions worksheet, 10th graders solve 9 various types of problems that include two word problems suing proportions. First, they use the table to find the ratios of each and express each ratio as a decimal rounded to...
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Worksheet
Curated OER

Math 212: Planes

For Students Higher Ed
In this plane learning exercise, students find the midpoint of a line, determine points on a plane, and use the cross product to find an equation with given parameters. This two-page learning exercise contains three problems.
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Worksheet
Curated OER

Algebra Using Proportions

For Students 10th
In this algebra using proportions instructional activity, 10th graders solve 14 various types of problems by applying algebra methods to geometry. First, they solve each of 8 proportions using cross products. Then, students use the...
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Worksheet
Curated OER

Alignment of a Solar Panel: Dot and Cross Products

For Students Higher Ed
In this dot and cross product worksheet, students identify vector points under given conditions determine vertical support and determine angles of an object. This two-page worksheet contains two problems.
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Lesson Plan
Curated OER

Forestry and Forestry Products

For Teachers 9th - Higher Ed
High school and college learners identify forestry career opportunities. They identify the parts of a tree cross-section and trees based on their leaves and characteristics. Pupils calculate board feet and explain safe methods of...
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Worksheet
Curated OER

Study Guide: Rational Numbers

For Students 6th - 8th
In this rational numbers worksheet, students solve and complete 8 different problems that include applying the comparison property and density property for rational numbers. First, they replace each blank with the correct symbol to make...
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Lesson Plan
Federal Reserve Bank

Sky Boys: How They Built the Empire State Building

For Teachers 3rd - 5th Standards
How tall is the Empire State Building? Lead your class through a collaborative estimation activity to determine the number of quarters it would take to reach the top and teach the following concepts: human capital, human resources,...
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Lesson Plan
Curated OER

Multi-dimensional Modeling of Ore Bodies Making Sense of Empirical Data

For Teachers 9th - 12th
Math scholars identify four different rock types in that strata and use this identification and data to construct a two dimensional geologic cross-section. They use data tables to construct a three-dimensional geologic cross-section.
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Lesson Plan
Curated OER

Translate Word Phrases and Sentences into Equations

For Teachers 8th - 11th Standards
Use this video to show your learners an example of how to translate word phrases into an equation to solve a real-world problem. The presenter begins with a review of how to use cross products to solve a proportion, including how to do...
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Lesson Plan
Curated OER

Ratios, Proportions, and Cross-multiplication

For Teachers 6th - 8th
Students use cross-multiplication to find the unknown respiration rate of an astronaut. In this multiplication lesson plan, students also use the same process to find missing values in proportions.
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Worksheet
Curated OER

Cross Out

For Students 3rd
In this number grid activity, 3rd graders look over a number grid, cross out the numbers in 5 directives, fill in the blank to one question and then double check their answers. Students make their own original cross out grid.
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Lesson Plan
Curated OER

Worksheet 8 - Vectors

For Teachers Higher Ed
In this vector worksheet, students find the area of a parallelogram spanned by vectors, they give the geometric and algebraic definitions of the dot product and describe a sequence of vectors. This one-page worksheet contains six...
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Lesson Plan
Curated OER

Just Look at Our Shoes

For Teachers 6th - 7th
Students complete cross-curricular activities using a shoe theme. In this cross-curricular instructional activity, students explore various systems, examine open and closed systems, and examine product life cycles.
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Worksheet
Curated OER

Zero Product Property and Quadratics

For Students 8th - 10th
In this quadratic worksheet, algebra learners use the zero product property to solve basic quadratic equations. They identify where the parabola crosses the x-axis. Explanations and examples are provided. Answers are located on page two....
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Lesson Plan
Curated OER

Basketball

For Teachers 9th - 12th Standards
Tap into the competitive nature of teenagers as your class practices setting up and solving rational equations. This activity starts with a specific ratio of games won to games played, then asks how many more games must be played to...
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Lesson Plan
Curated OER

Exploring Chords: Products of Chord Segments

For Teachers 7th - 10th
Learners identify the properties of chords. In this geometry lesson, students multiply chord segments to find the solution to their problem. They construct two chords that cross on  a circles.

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