National Research Center for Career and Technical Education
Hospitality and Tourism 2: Costing
The lesson plan provides a richly detailed narrative and sample problems for teaching or reinforcing how to work with percentages. In particular, your audience will compute the costs per serving of food and simulate setting menu prices...
Illustrative Mathematics
Accuracy of Carbon 14 Dating II
The scientific issue of carbon-14 dating and exponential decay gets a statistics-based treatment in this problem. The class starts with a basic investigation of carbon content, but then branches out to questions of accuracy and...
Illustrative Mathematics
Eratosthenes and the Circumference of the Earth
The class gets to practice being a mathematician in ancient Greece, performing geometric application problems in the way of Eratosthenes. After following the steps of the great mathematicians, they then compare the (surprisingly...
EngageNY
Decimal Expansions of Fractions, Part 1
Is it possible to add infinitely long decimals? As pupils complete the examples in the ninth lesson plan of this 25-part series, they determine that adding these decimals cannot be done without error. Their task is then to determine the...
CK-12 Foundation
Understand and Create Histograms: Car Sales
Create a history of car sales. Pupils create a histogram/bar graph to show the number of car sales made during the week. Using the data display, learners calculate numerical summaries of the data and find the percent of cars sold during...
Curated OER
Numbers Based on Percentage
In this percentage worksheet, students examine written statements and solve to find the percent of a number or find a missing number when given a percent. This one-page worksheet contains ten problems.
Curated OER
Developing the Concept: Percents
In this percents lesson plan, learners review how to solve a multiplication equation where they must solve for a variable. They solve equations with missing numbers and percents.
PBIS World
Problem Behavior Questionnaire
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...
Curated OER
Investigation - The M & M Mystery
Sixth graders inspect M&M's to complete statistical data. Students interpret percent of colors represented. They convert data from decimals, fractions, and percents. Using the data, 6th graders create a bar graph and a circle graph.
Illustrative Mathematics
Battery Charging
Your class will be very interested in the results of this activity. How long does it take a MP3 and video game player to charge? Sam only has an hour and the MP3 player only has 40% of its battery life left. Plus, his video player...
Curated OER
Percentages
A presentation on how to calculate percentage is here for you. Young mathematicians gain practice in performing the calculations necessary to find a percentage value. Many excellent tips and problems to solve are embedded in the...
Scholastic
Study Jams! Finding a Fraction of a Set
Finding a fraction of a number is just multiplication in disguise. Young mathematicians can interact with this lesson to practice using multiplication to find a percent of a whole number. The narrator goes over how to put the number over...
PBL Pathways
Do Homework?
To complete homework or not to complete homework ... that is the question. Decide whether it makes a difference on finals by doing homework. Individuals create a scatter plot and find a line of best fit for data on the percent of...
Curated OER
Percents: (An Application to Real Life Problems)
Seventh graders explore the concept of calculating percents. In this calculating percents lesson, 7th graders simulate ordering food off of a menu. Students work in groups to calculate the bill, tax, and the tip for the...
Curated OER
Four Decimal, Fraction, and Percent Activities
In this fraction worksheet, students solve problems presented in four different activities. The activities cover percentages, fractions, decimals, currency exchange, and value added tax. A card "game" is one of the...
Curated OER
Using the Proportion Method to Solve Percent Problems
For this algebra worksheet, students calculate the percents of a number. They convert between decimals and percents. There are 20 questions with an answer key.
Curated OER
Introducing the Concept: Percents
Students explore the math concept of percents. In this percents lesson, students examine visual examples of the relationships among fractions, decimals, and percents. Students also practice solving problems that their instructors model.
Math Worksheets Land
Patterns of Association (Using Data Tables) - Independent Practice Worksheet
Here is a worksheet that belongs in a four-part resource that has learners practice using data tables to calculate percentages. The page has ten problems with different data tables asking to find different...
Curated OER
Finding Percents of a Number
In this percents worksheet, students find the values of each percent and number. Students solve forty percent value problems. Students write their answers in the provided space.
Curated OER
Percentage Practice
In this percentage worksheet, students find the percent of a two-digit and three-digit whole number, change the percent to a decimal, and multiply. Students solve twenty problems.
Curated OER
Percent of Increase and Decrease
In this change in percent instructional activity, students find the percentage of increase and decrease of a number. There are four problems to solve.
Illustrative Mathematics
Chess Club
When the membership in a chess club changes, it is your mathematicians' job to find out how many boys and girls are attending and the percent change from last year. The activity provides a great compound problem finding the different...
Yummy Math
US Holiday Candy Sales
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...
Balanced Assessment
Stock Market
Analyze trends in the stock market using histograms. Future economists use data presented in a histogram to find periods of greatest increase and decrease. They also draw conclusions about days that would be best to invest.