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The pH scale is actually based on logarithms rather than just simple numbers. The fact-filled video begins with an explanation of the auto-ionization of water. Then it describes the relationship between H+ and OH- in every solution. It...

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### We found 70 reviewed resources

Lesson Planet: Curated OER

#### Lights on the International Space Station

Groups explore illumination with NASA's Lighting Environment Test Facility (LETF) as a context. Using the TI-Nspire app, groups determine the lux equation that models their simulation. They then use the lux equation to solve problems...

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#### Simplifying Radicals/Imaginary Numbers

Looking for straightforward practice on simplifying radicals and imaginary numbers? Here are 20 problems to practice these skills and an answer key for the odd-numbered questions.

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#### Analytic Geometry Study Guide

Are you looking for a comprehensive review that addresses the Common Core standards for geometry? This is it! Instruction and practice problems built specifically for standards are included. The material includes geometry topics from...

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#### Saxon Math: Algebra 2 (Section 4)

This fourth of twelve units in a series continues the investigation of functions through equations and inequalities. However, the modular nature of the lessons in the section make this an excellent resource for any curriculum covering...

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#### Performance Based Assessment Practice Test (Algebra II)

A full-length practice test like this one, especially one that includes a number of open response questions, is a phenomenal tool in a class as rigorous as algebra 2. Here the learners can really get that hands-on experience wrestling...

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#### Adding and Subtracting Radicals

Help remove some of the confusion surrounding the addition and subtraction of radical numbers with this set skills practice problems. Taken straight from the pages of a math text book, this resource provides learners with numerous...

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#### Simplifying Radical Expressions

In a radical expressions worksheet, learners use the Product and Quotient Properties of Square Roots to simplify a variety of square roots. The worksheet begins with simple radicals, progresses to radicals involving fractions and...

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#### Checking a calculation of a decimal exponent

In a writing prompt, learners are asked to check the calculation of a decimal exponent without a calculator. Use as an opener or assessment after studying fractional exponents. Requires a strong understanding of exponents and roots to...

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#### Calculating the square root of 2

Does a calculator give you the exact value of the square root of 2? Here, learners must decide if 1.414236 is equal to the square root of 2. They must also explain why the square root of 2 could never be equal to a terminating decimal....

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#### Rational or Irrational?

Is 4 plus the square root of 2 rational or irrational? After your class has gained a basic grasp of rational and irrational numbers, use this worksheet to push them a little further in their understanding. Learners must identify sums and...

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#### Applications of Exponential Functions

Exponential functions are the name of the game. Young mathematicians can work through each of the eight worksheets by evaluating functions, applying logarithms, completing logarithmic functions, and building inverse functions. This would...

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#### Exponent Rules

Pupils use calculators to work independently to discover the rules for working with exponents. The lesson requires the use of a TI-nspire handheld and software.

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#### The pH Scale

The pH scale is actually based on logarithms rather than just simple numbers. The fact-filled video begins with an explanation of the auto-ionization of water. Then it describes the relationship between H+ and OH- in every solution. It...

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#### Simply Radical

Simplifying is radical, dude! After reviewing how to simplify square roots of whole numbers, scholars consider how to simplify square roots of algebraic monomials. Also taken under consideration is how to simplify cube roots of whole...

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#### The pH Scale

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#### Multiply Radical Expressions

This short presentation on multiplying radicals together and with the distributive property does a nice job of working out, step by step, three examples start to finish. Care is taken to separate the radicand multiplication from the...

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#### Happy 14th B’ak’tun, the start of the next Great Mayan cycle

The ancient Mayans had a complex calendar and number system with a rich history. In fact, the date 12/21/2012 was the center of much controversy as to whether or not it was the end of time. It wasn't the end of time, but it was the end...

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#### Operations with Radical Expressions

Learners add, subtract, and multiply radical expressions. The instructional activity includes like and unlike radicands. Use as a study guide during a lesson or for skills practice.

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#### Indices

The laws of exponents are written on a handy reference sheet. Note that since this worksheet was written in the UK, powers or exponents are also called indices (singular: index). If this does not pose a problem for you, the concepts and...

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#### Rational Exponents

In this Algebra worksheet, students simplify expressions involving rational exponents. The one page worksheet contains explanation, examples and nine practice problems.

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#### Checking Equivalence

High schoolers solve equations. In this calculus lesson, students compare equations and identify equivalencies. They compare and approximate fractions and decimals.

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#### Calendar Fun Operations

Middle schoolers explore the concept order of operations. In this order of operations lesson, students make a song about the order of operations in groups. Middle schoolers practice working problems using order of operations.