Who knew that the Egyptian, Julian, and Gregorian year were different lengths? Your mathematicians will! They will have to calculate the difference between the years in seconds and find the percent change. Using dimensional analysis,...

Individuals measure a computer monitor and determine how accurate their measures are. The eighth segment in a series of 20 introduces the concept of percent error. Pupils find the percent error of their measurements and discuss the...

Adolescents love to shop, especially when an item is discounted. Here, shoppers only have a set amount of money to spend. Will they be able to make a purchase with the discount and tax added in? Percent discounts can be calculated...

If mathematicians know the secret to compound interest, why aren't more of them rich? Young mathematicians explore compound interest with exponential functions in the twenty-seventh installment of a 35-part module. They calculate future...

Take an overall view of percentages. Pupils determine whether a shop owner's claim is correct about what percent of his shop is viewable from the installed security camera. Learners try to find whether there is a better location for the...

Make sure there is enough ice cream on hand. Learners try to find out how much ice cream to buy for a sports event. Scholars use a pie chart showing the percent of a sample of people who like different flavors of ice cream. Using the...

Sixth and seventh graders analyze smoking statistics. In this health lesson, learners look at the percentage of people who smoke from each race group. They create a bar graph and circle graph that displays this information. 

Use the power of mathematics to find the number of red chips in a bag — it's a little like magic! The activity asks learners to collect data to determine the percentage of red chips in a bag. They calculate the margin of error and...

Find the percent of middle schoolers who want the ability to freeze time. The 21st installment in a series of 25 has groups collect a random sample of respondents who answer a question about superpowers. Using sample statistics,...

The worksheet belongs to a four-part resource that applies percentages to data tables. The page has three practice problems that continues with the development of this topic.

Water covers around 75 percent of the earth, yet humans struggle to find enough fresh water to live. The fourth of 10 lessons focusing on Fresh Solutions requires brainstorming. Young scientists consider various problems related to fresh...

It can be frustrating for a child and teacher alike when a problem behavior arises over and over in a classroom. Analyze when, where, and why the behavior is occurring with a questionnaire, in which educators mark the percent of the time...

In this practice with sequences activity, students find the arithmetic sequence and geometric sequence of given problems.  They determine the percent of change and solve exponent problems.  This one-page activity contains 11...

In this algebra worksheet, students convert between percents and decimals. They calculate sales tax, discounts and relative errors. There are 4 questions with an answer key.

In this math instructional activity, students change percents to fractions on five problems. Students complete a table. Students find a given percent of five numbers. They complete five story problems involving percents.

Students convert between decimals and percents. In this algebra lesson, students define percent as it relates to sales and tax. They calculate the percents of number using multiplication.

In this percent activity, students find the percent of one number to another. A website reference for additional resources and an answer key is given.

Seventh graders calculate percentages when given a fraction. They convert a percentage to a fraction. All of this be done by each student's ability to read the graphs made available by the spreadsheet information.

In this percent equation worksheet, students use proportions to find the percent of a given number. This two-page worksheet contains 12 problems. Answers are provided on the last page of the worksheet.

What is the difference between accuracy and precision? This worksheet has learners define the terms accuracy and precision, and compare bulleye diagrams to find examples of both. Students analyze given data and determine the accuracy and...

Candy is a big business! Calculate the amount of money consumers spent on major holidays—Easter, Halloween, Christmas, Hanukkah, and Valentine's Day—based on the total amount of candy sales from 2011 and the percentage of each holiday's...

Eat up the task on systems of equations. Given information on the total number of sandwiches and the total income, learners write and solve a linear system of equations to find the number of each type of sandwich sold at a shop. They...

Parallelograms are pairs of triangles all the way around. Pupils measure to determine the area and perimeter of a parallelogram. They then find the area of the tirangles formed by drawing a diagonal of the parallelogram and compare their...

Strive to think outside of the quadrilateral parallelogram. Worksheet includes two problems applying prior knowledge of area and perimeter to parallelograms and trapezoids. The focus is on finding and utilizing the proper formula and...