Percents Teacher Resources

Plenty of time was invested in creating this detailed presentation. The first slide alone includes several steps that support your explanation of percent composition, a precursor to understanding how to write empirical and molecular...

Order up a resource on comparing rational numbers. Scholars order fractions, decimals, and percents by converting to a single form. They conduct a cut-and-paste activity ordering three sets of rational numbers.

Fractions, decimals, and percents all say the same thing! Show your classes how to convert between the three forms using visual and numeric representations. Then lead them to an understanding of scientific notation.

There are many ways to look at percentages. Here are eight problems to practice the different ways to calculate percentages based on how the question is asked. There are no examples, just practice problems.

Learners solve four short answer problems. They determine the number of each color of candy or paper clip in a bag, and calculate the fractional, decimal, and percentage representation of the color compared to the total number of items.

This PowerPoint provides the steps needed to change a fraction into a percent. Each slide displays the steps in written details, along with an actual example of the problem. This PowerPoint is effective in introducing the steps of...

This PowerPoint introduces and defines the concept of percents. The slides contain a thorough definition of percents and examples of how we use percents in our daily lives. This PowerPoint is fantastic way to introduce a unit on percents.

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...

Do you need a fast and thorough way to instruct your class members on how to determine the percent composition of a compound? Then this short resource will be a wonderful addition to your existing instructional methods. The video...

How much oxygen is in water? Is it the same as the chemical formula? Learners observe the differences between a substance's formula and its percent composition with a video from Socratica's Chemistry Lessons series. The narrator...

Here is an approach to calculating percent with 16 practice problems to solidify the skill. Two examples demonstrate dividing by 100 to get one percent and then multiplying by the percentage in question to get the solution. Learners find...

Estimating Errors in Chemistry is a detailed handout that illustrates the importance of calculating the percent error when working in the chemistry lab. There are no actual problems to solve, just notes and examples of calculations. Hand...

You have just got to do it! Reinforce math skills with an exercise on converting fractions into percentages.

Do you have mole problems? If so, call Avogadro at 602-2140. The lesson starts with pupils working independently to solve for molar mass of ionic compounds. Then they learn to solve for percent composition and later perform an...

In this percent composition worksheet, students find the percent of each type of atom in a compound, they find the total mass of a sample and they determine the mass of particular atoms in a compound.

This instructional activity is meant to be used in laboratory experiments for which there is an accepted value that pupils are attempting to discover. It asks them to compare their results to commonly accepted values and then to...

Learners calculate the percent of a number.  This one-page worksheet contains 10 problems. Answers are provided.

This organic chemistry lab activity is appropriate for teaching polymerization, percent yield, melting point, or the types and uses of polymer materials. Chemistry pupils imagine that they are working for a company to develop a special...

In this percentage activity, students calculate percentages given various types of problems. They calculate percent of compounds in a solution, they calculate mass of compounds given percentages of solutions, and they percentages of...

Middle schoolers identify proper, improper fractions, and mixed numbers.  They reduce fractions to their lowest terms. They add and subtract fractions with different denominators, and multiply and divide fractions, as well as...

Junior chemists discover how to calculate excess reactants, handle limiting reactants, and determine percent yield. After background information is provided, step-by-step examples are solved. You can use this detailed slide show to teach...

Here is a challenging and educationally sound presentation on how to convert between fractions, decimals, and percents. Youngsters are given many opportunities to make these conversions, and receive good coaching in the teaching slides....

Staticians and researchers can learn many things about a population using just a few numbers. Viewers learn how to describe populations with statistical values in the seventh installment of an 11-part Math in Science video series. The...

An explanation of the percent proportion formula. Identify the variables. Plug in the known values. Cross multiply. Use division property of equality to solve. A step-by-step example.