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Lesson Plan
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EngageNY

Using the Quadratic Formula

For Students 9th - 10th Standards
What is the connection between the quadratic formula and the types of solutions of a quadratic equation? Guide young mathematicians through this discovery as they use the discriminant to determine the number and types of solutions, and...
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PPT
Science Geek

Percent Composition, Empirical and Molecular Formulas

For Students 10th - Higher Ed
Help your pupils understand when empirical becomes molecular. The lesson presentation demonstrates the connection between empirical formulas and molecular formulas. Then, given percent composition, the lesson demonstrates the steps to...
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Lesson Plan
EngageNY

Recursive Formulas for Sequences

For Students 9th - 10th Standards
Provide Algebra I learners with a logical approach to making connections between the types of sequences and formulas with a lesson that uses what class members know about explicit formulas to develop an understanding of recursive formulas.
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Lesson Plan
Virginia Department of Education

Distance and Midpoint Formulas

For Teachers 9th - 11th Standards
Small groups work through two guided activities to derive the distance and midpoint formulas for the coordinate plane. The activities begin with concrete examples and move to abstract.
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Interactive
Royal Society of Chemistry

Organic Formulae 2

For Students 6th - 12th
Is your chemistry class frustrated by the multitude of representations of organic molecules? Add some challenging puzzles to an otherwise ho-hum organic lesson and let the fun begin! The second of a two-part activity focused on basic...
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Lesson Plan
Virginia Department of Education

Formulas and Percent Compositions of Ionic Compounds

For Teachers 9th - 12th Standards
Try not to blind anyone with science by following the safety rules. The lesson encourages scholars to form an ionic compound from magnesium and chlorine. Then they determine the empirical formula and determine the mole ratio and percent...
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Interactive
Royal Society of Chemistry

Ionic Formulae 1

For Students 6th - 12th Standards
The ionic formula for banana would be BaNa2. Scholars work their way through four puzzles reviewing ionic formulas. Each puzzle requires scientific knowledge as well as logic and problem-solving skills.
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Interactive
Royal Society of Chemistry

Ionic Formulae 2

For Students 6th - 12th Standards
Scientists call ions with a negative charge anions. Scholars work through one matching puzzle and four logic puzzles reviewing the chemical formulas for anion ions. Each level increases in difficulty and solidifies the concept in pupils'...
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Interactive
CK-12 Foundation

Distance Formula: Right Triangles

For Students 8th - 10th Standards
Go the distance with a far out resource. Individuals use an interactive to create right triangles on a coordinate plane to help find distance between two points. Challenge questions aid them in developing the distance formula.
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Interactive
CK-12 Foundation

Midpoint and Segment Bisectors: The Midpoint Formula

For Students 9th - 12th Standards
Let's meet in the middle. Given two points on the coordinate plane, pupils use the interactive to find the midpoint. The interactive provides a graphical display of the midpoint and the midpoint formula with the coordinates of the...
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Interactive
CK-12 Foundation

Recursive Formulas: Fibonacci Sequence

For Students 11th - Higher Ed Standards
Explore the building blocks of the Fibonacci Sequence. Given the lengths of sides of squares, pupils deduce the pattern to determine the lengths of two more squares. Learners continue to work with recursive formulas to generate numerical...
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Lesson Plan
Newseum

Media Ethics: Fairness Formula Starts With Accuracy

For Teachers 5th - 12th Standards
As part of a study of media ethics, young journalists apply a fairness formula to news reports. They look at accuracy, balance, completeness, detachment, and ethics to determine if the reporting is fair.
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Interactive
CK-12 Foundation

Midpoint Formula

For Students 8th - 10th
By selecting the resource, you're already halfway to understanding midpoints. Pupils use a slider to locate midpoints on the coordinate plane. They connect this conceptual understanding to the formula for the midpoint of a line segment.
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Interactive
CK-12 Foundation

Graphs Using Slope-Intercept Form: Zip-Line

For Students 7th - 9th Standards
Zip lines aren't so scary when all your scholars use them for is math. Young mathematicians see how the slope of a zip-line to a building changes as the height changes. They answer a set of challenge questions regarding the scenario.
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Worksheet
Curated OER

Writing Ionic Formulas

For Students 10th - 12th
In this ions worksheet, students use a table of common ions to determine how to write the chemical formula, using subscripts, to make a neutral compound. This worksheet has 44 problems to solve.
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Lesson Plan
Curated OER

Distance Formula

For Teachers 1st - 11th
Students calculate the distance between two points using the distance formula. In this geometry lesson, students derive the distance formula using the Pythagorean Theorem.
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Worksheet
Curated OER

Percentage Composition and Empirical & Molecular Formula

For Students 10th - 12th
In this compounds worksheet, students determine the empirical and molecular formulas for given compounds. This worksheet has 10 problems to solve.
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Lesson Plan
Virginia Department of Education

Matter and Energy: Equations and Formulas

For Teachers 9th - 12th Standards
Using simple materials, an informative lesson demonstrates the Law of Conservation of Matter and explains how to balance chemical equations. Young chemists perform experiments, analyze reactions, and balance chemical equations on their...
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Lesson Plan
Curated OER

Area Model of Multiplication Using Base 10 Manipulatives

For Teachers 3rd - 5th
Explore two-digit multiplication with your class as they work in groups to build models of two-digit multiplication using base 10 manipulatives. They construct rectangles replacing standard numbers with equivalent place values using the...
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Lesson Plan
EngageNY

An Area Formula for Triangles

For Teachers 11th - 12th Standards
Use a triangle area formula that works when the height is unknown. The eighth installment in a 16-part series on trigonometry revisits the trigonometric triangle area formula that previously was shown to work with the acute triangles....
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Lesson Plan
EngageNY

The Volume Formula of a Pyramid and Cone

For Teachers 9th - 10th Standards
Our teacher told us the formula had one-third, but why? Using manipulatives, classmates try to explain the volume formula for a pyramid. After constructing a cube with six congruent pyramids, pupils use scaling principles from previous...
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PPT
Science Geek

Ionic Compound Formulas

For Teachers 9th - 12th
By contrasting cations and anions, this presentation shows how to predict ionic charges by periodic groups. The slides conclude with a few guided practice problems for writing ionic compound formulas. 
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Lesson Plan
EngageNY

Using Trigonometry to Determine Area

For Students 9th - 10th Standards
What do you do when you don't think you have enough information? You look for another way to do the problem! Pupils combine what they know about finding the area of a triangle and trigonometry to determine triangle area when they don't...
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Interactive
CK-12 Foundation

Alternate Formula for the Area of a Triangle: Alternate Area of a Triangle

For Students 10th - 12th
It's always nice to have a plan B. Pupils investigate an alternate formula for the area of a triangle that uses sine. A set of challenge questions shows how the new formula relates to the well-known formula of (1/2)bh.

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