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Interactive
CK-12 Foundation

Prices Involving Sales Tax: Proper Tipping

For Students 6th - 8th Standards
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...
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Lesson Planet Article
Curated OER

Who Said Math Can't Be Fun?

For Teachers 4th - 8th
With these innovative ideas, demonstrate to your class that math doesn't always have to be hard work.
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Lesson Plan
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Illustrative Mathematics

Margie Buys Apples

For Teachers 3rd - 5th Standards
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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Lesson Plan
Curated OER

Real Math

For Teachers 11th - 12th
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...
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Lesson Plan
S2tem Centers SC

Investigating Chance Processes of Probability

For Teachers 6th - 8th Standards
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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Lesson Plan
Curated OER

Math Centers

For Teachers 5th
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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Lesson Plan
Curated OER

The Art of Interpreting Percent

For Teachers 4th - 6th
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...
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Worksheet
Concord Consortium

Rule of 72

For Students 9th - 12th Standards
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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Lesson Plan
Curated OER

Percents: What's the Use?

For Teachers 6th - 8th
Students explore percentages in real world situations. In this percents lesson, students determine the final sales price after discounts. Students interview community members and determine how percentages are used in the real world.
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Lesson Plan
Curated OER

Graphs: All About Our Class

For Teachers 6th - 7th
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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Lesson Plan
Curated OER

Percents: What's the Use

For Teachers 6th - 8th
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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Lesson Plan
Curated OER

Government Goods and Services

For Teachers 5th
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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Lesson Plan
Curated OER

Getting Percentible

For Teachers 4th
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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Lesson Plan
Curated OER

Slosh, Dribble, and Plop

For Teachers 4th - 7th
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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Lesson Plan
Curated OER

Buying a Car

For Teachers 7th - Higher Ed
Students complete the PLATO ¿¿ Educational Software lesson plan: 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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Lesson Plan
Curated OER

Miami Seaquarium and Mathematics

For Teachers 8th
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.
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Lesson Plan
Mascil Project

Circular Pave-Stones Backyard

For Teachers 6th - 12th Standards
Pack the instructional activity 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...
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Lesson Plan
Curated OER

Decimal Bingo

For Teachers 3rd - 5th
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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Lesson Plan
Curated OER

Fraction Benchmarks

For Teachers 3rd - 4th
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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Lesson Plan
Curated OER

Balancing the Scales: Understanding Ratios

For Teachers 5th - 8th
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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Lesson Plan
Curated OER

Using Ratios to Taste the Rainbow

For Teachers 9th - 11th
Students solve problems using ratios and proportion. In 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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Lesson Plan
Curated OER

A Fraction of the Possibilities

For Teachers 12th - Higher Ed
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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Lesson Plan
Curated OER

Giving it 100%

For Teachers 3rd - 4th
Students build knowledge about the number relationships between decimals and percents as it relates to converting decimals into percents. In this decimal and percent lesson, students recognize equivalent forms of fractions, decimals, and...
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Lesson Plan
Curated OER

Camouflage and Protective Coloration: A Model of Natural Selection

For Teachers 9th - 12th
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...