Inside Mathematics
Hopewell Geometry
The Hopewell people of the central Ohio Valley used right triangles in the construction of earthworks. Pupils use the Pythagorean Theorem to determine missing dimensions of right triangles used by the Hopewell people. The assessment task...
Mathematics Vision Project
Circles: A Geometric Perspective
Circles are the foundation of many geometric concepts and extensions - a point that is thoroughly driven home in this extensive unit. Fundamental properties of circles are investigated (including sector area, angle measure, and...
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Problem Solvers
Fifth and sixth graders compare decimals to the place-value structure in the base-ten number system. They represent fractions as parts of unit wholes, as parts of a set, as locations on a number line, and as divisions of whole numbers....
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Snail Invasion
Exponential growth is modeled by learners as they analyze and interpret the data presented in this real-life scenario centered on the destructive invasion of the Giant African Land Snail. Learners get a touch of history and practice...
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Russian Dolls Investigation
Pupils measure a set of Russian dolls using the metric system. In this measurement lesson plan, students identify certain relationships between sets of measurements by measuring a set of Russian dolls and presenting their findings to...
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Using Math Concepts to Collect and Document Specimens
Students determine the length and width of leaf samples to the nearest millimeter and the circumference of trees. They participate in a discussion about the importance of collecting specimens carefully. They compile accurate...
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Budget Finances
Students role play the role of a recent graduate of high school living on their own. Using play money, they are given one month's salary and they discover they own their own house or apartment and owe money on a car loan. They develop...
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Problem Solving with Diagrams, Part One
In this diagrams worksheet, students use diagrams to help them solve fraction word problems. Students complete 4 problems on this worksheet.
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Algebra Match
Twelfth graders identify the parts of an algebraic equation. They consider the many uses of algebra in daily life. They play a game, Algebra Match, where student pairs work to solve equations listed on index cards.
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Making Good Investments
Students compare different aspects of investing money from traditional savings accounts to money market accounts. They research investment accounts at local banks and compare them.
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Exploring Geometric Mean
Students solve problems using geometric means. In this geometry instructional activity, students create altitudes in right triangles. They use Cabri software to move the triangle around and observe different sides and angles.
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Exploring Geometric Mean
Student identify the solution using geometric mean. In this geometry lesson, students create right triangles where the altitude of the triangle is the side containing the right angle. They modify shapes using Cabri software and observe...
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The Price Is Right - Grocery Store Prices
Eighth graders use the unit price to compare which local grocery store has the best prices. Assign students to work with a partner and a role. One person is the recorder and the other is the mathematician.
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Liquid Killer
Students explore number sense applications and discuss strategies for multiplication and division using mental math. For cross-curricular purposes, they explore causes and effects of inequality and social injustice. Students explore...
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Saving Money Through Mathematics
Third graders discuss light sources and collect data about energy sources. They compare data and create a multiple line graph showing energy used by light sources for each student in the group. They present their graphs and write a...
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Pumped Up Gas Prices
Pupils investigate the concepts of differing gas prices and how they are set in different geographical areas. They conduct research about the economic concepts of supply and demand and predict the outcomes upon the prices of gasoline.
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Volume of a Cylinder
Students predict the shape of a geometric figure in 3D. In this geometry lesson, students construct 3D shapes to perfect their knowledge of measuring and predicting. This assignment is also available as an online interactive...
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A Special Relationship
Students discover the relationships of the lengths of the sides of right triangles and right triangles using a series of drawings on dot paper. They investigate and solve problems of standard (customary and metric units) and non-standard...
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You Can't Go Wrong with a Right Triangle 2
Upper graders use the properties of right angle trignonmetry to measure objects such as the school flagpole. They solve real world problems using these properties.
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Angles and Similarity
Students identify triangles as similar or congruent. For this geometry lesson, students drag triangles around on the navigator to see the effect of different angles on the shape of the triangle. They discuss angle similarity and angle...
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Don't Crack Humpty
Students investigate the engineering design process and the relationship between distance, time, and speed. Using a generic car base, small groups design a device that will protect an egg on or in the car as it is rolled down a ramp at...
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Scaling Down the Pyramids
Students construct three-dimensional models of the three pyramids at Giza. They research the building of the pyramids and record the height, base and angle measurements of each pyramid. They create a file of facts regarding the pyramids.
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Solar Racing
Students harness the power of the sun to design, construct and evaluate a solar-powered model car of their creation. They race their cars in a "Solar Sprint" race modeled after the National Renewable Energy Laboratory's Junior Solar...
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Math: Currency Exchange Rates
Sixth graders apply the division and multiplication of decimals to convert dollars to various international currencies. In a travel simulation activity, they convert money, distance, and temperatures. During their "trip," students...