CK-12 Foundation
Prices Involving Sales Tax: Proper Tipping
A five-question interactive challenges mathematicians to find a correct tip and total amount using percents five, 12, and 18. A tool with moveable pieces assists participants in locating answers. Types of questions include...
Curated OER
Who Said Math Can't Be Fun?
With these innovative ideas, demonstrate to your class that math doesn't always have to be hard work.
Illustrative Mathematics
Margie Buys Apples
One of the most common, everyday applications of math is dealing with money. This single problem calculating how much change Margie receives is more involved than it appears at first glance. An understanding of how fractions and decimals...
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Real Math
Students explore careers that require math knowledge and solve real life math problems. As a class, they compare and contrast classroom math to real life math and explore the links between algebra, geometry and math skills used in...
S2tem Centers SC
Investigating Chance Processes of Probability
How likely is it that the school cafeteria will serve chicken tomorrow? Discover the concept of probability with the roll of the dice. Pupils evaluate the liklihood of several statments about everyday life. Then, a mathematical...
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Math Centers
Fifth graders review the concepts of fractions: improper, mixed, proper, like denominator addition. They then review the concepts of creating pie graphs using a percent circle using manipulatives.
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The Art of Interpreting Percent
Ddefine the relationships between fractions, decimals, and percentages in a series of lessons. The class practices converting between these three versions of a number. They also find the common factor of a numerator and denominator and...
Concord Consortium
Rule of 72
Find an easier way to double it. Using the price of an item and the Consumer Price Index, learners determine how long it will be for the price to double. Scholars calculate the length of time it would take for the price to double using a...
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Percents: What's the Use?
Learners explore percentages in real world situations. In this percents lesson, students determine the final sales price after discounts. Learners interview community members and determine how percentages are used in the real world.
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Graphs: All About Our Class
Students respond to survey questions, discuss results, brainstorm ways to represent survey information, and create table of class results. They find mean, range, and percentages, and create graph to display results.
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Percents: What's the Use
Students research percentages in real world situations. In this percents lesson, students demonstrate their ability to apply percents to everyday situations. Students communicate mathematically by conducting interviews about percents and...
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Government Goods and Services
Fifth graders investigate the connection between taxes and government services. In this economics lesson, 5th graders discuss the process and benefits of paying sales and income taxes. Using calculators, students compute the amount of...
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Getting Percentible
This unit explores the connections between percentages, decimals, and fractions. It focuses on strategies for solving problems involving percentages and applies these strategies to real life contexts.
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Slosh, Dribble, and Plop
Students recognize the need for a standard unit of volume. They estimate and measure to the nearest liter. Also they relate the liter to the familiar everyday containers.
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Buying a Car
Students complete the PLATO ¿¿ Educational Software lesson: Math Problem Solving: Car Costs to determine if he/she can afford to drive the car they are planning to buy.
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Miami Seaquarium and Mathematics
Eighth graders, in groups, go on an imaginary field trip to Miami Seaquarium and figure out what the total cost of the trip would be.
Mascil Project
Circular Pave-Stones Backyard
Pack the lesson into your plans. Young mathematicians learn about packing and optimization with the context of circular paving stones. They use coins to model the paving stones, and then apply knowledge of circles and polygons to...
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Decimal Bingo
Practice converting decimals into fractions. They draw a 3x3 grid and write in any nine common fractions with denominator 10 or 100 and with numerators 9 or less. The group listens as the teacher call out decimal numbers within the given...
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Fraction Benchmarks
Learners investigate the fraction benchmarks for zero, one half, and one. They use these benchmarks to compare the relative sizes of fractions, through estimating, ordering and placing them on a number line. An assessment worksheet is...
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Balancing the Scales: Understanding Ratios
Students are introduced to the concept of ratios. In groups, they convert sets of numbers into a ratio. After practicing, they use the ratios and proportions to solve story problems. They also calculate map distances and discover map...
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Using Ratios to Taste the Rainbow
Students solve problems using ratios and proportion. For this algebra lesson, students analyze skittles and their different colors as they apply the properties of ratios and proportions to solve their problems.
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A Fraction of the Possibilities
Students review the conversion of fractions to decimals, develop strategies to compare fractions perform complex calculations using ratio techniques similar to the construction of fractions.
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Giving it 100%
Students build knowledge about the number relationships between decimals and percents as it relates to converting decimals into percents. For this decimal and percent lesson, students recognize equivalent forms of fractions, decimals,...
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Camouflage and Protective Coloration: A Model of Natural Selection
Students investigate natural selection and differential survival among divergent phenotypes of a population. Using everyday items , they model adaptations of camouflage and protective coloration in two very different environments.They...