Curated OER
Properties of Arcs, Lengths and Chords
Students differentiate between the different properties of arcs, arc lengths, chords, and chord lengths. In this circles lesson, students calculate the arc length of a given circle, and find the measure of the inscribed angles of a...
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Prize Numbers
Students explore what a proof is, how and why mathematicians create them and compose essays on how reason and logic are employed in the workplace. They explore whether any three lines can make a triangle and attempt to verify Goldbach's...
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You Bet!
Students explore the mathematical probabilities involved in gambling and how these factors affect people's behavior. They work in pairs and conduct and experiment pertaining to blackjack. The class creates a graph showing the trends found.
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Estimation Challenge
Students calculate the length of the classroom using non-standard units of measurement and estimation. Using a cracker box, they discuss measuring various objects in the room as a class, and independently estimate and measure the length...
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Public Land
Students examine the needs of their community for public space and determine the solutions to math problems related to planning landscape designs. They read and discuss an article from the New York Times, create their own designs for a...
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Simply the Best
Students determine whom they consider "the best" performer in a variety of entertainment industries and discuss how to accurately measure greatness. They create bar graphs comparing statistics of the 1975 Cincinnati Reds and the 1998 New...
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Running of the Bulls
Students examine what might be in store for Wall Street following the NASDAQ's 547.57 point plunge on Tuesday, April 4, 2000. They evaluate how they might manage a heavily laden high-tech portfolio before deciding how to invest in the...
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On the Road Again
Students work with patterns to develop formulas that will help them determine total cost. For this patterning lesson, students watch a video about an NBA trainer. (not included) They work in groups to access the assigned Internet...
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Symmetry in Paper Airplanes
Students explore symmetry. In this geometry and scientific inquiry lesson, students design paper airplanes with middle line symmetry, as well as right, obtuse, and acute angles. Students measure the plane's angles using a...
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Too Free, Or Not Too Free?
Learners create a survey that examines what level of electronic surveillance might be acceptable to members of the school and community. They poll the community, and analyze the results in the form of graphs and a written news article.
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Operations with Functions Including Composition
Students explain functions. In this function lesson, students solve functions. Groups of students develop strategies to perform operations with functions. They write test questions using functions which include all...
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Inequalities Compound Fram
Students practice graphing compound inequalities. They draw a Venn Diagram on two different sports visualizing that their is a middle section on commonality among the two sports groups and then relate that concept to compound inequalities.
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Pythagoreum Theorem
Middle schoolers practice assessing how to apply the formulas for the area of parallelograms and triangles. They recount the contributions of Pythagoras and apply the theories of the Pythagorean theorem in a group project to calculate...
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Similarity and Congruence
Students determine that two figures are similar or congruent by
investigating figures that are similar and figures that are congruent. They prove that two figures are similar or congruent by using definitions,
postulates, and theorems.
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Positive and Negative Numbers
In this positive and negative numbers worksheet, 4th graders compare 3 and -4, put 5 numbers in order from least to greatest, locate 5 numbers on a number line, fill in 6 missing numbers in a set of numbers and answer 1 word problem.
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Linear Equations in Our Every Day World!
In this linear equations worksheet, students read and interpret graphed linear equations. They read a story problem, write a linear equation, and plot the points on a coordinate plane. This five-page worksheet cotnains 12...
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Mathematical Metaphors in Art
Learners investigate the role of mathematics in their everyday lives. They discover, through reading a Times article and through analyzing a specific example of art, that mathematics exists on a deeper 'metaphoric' level in art.
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Reaction Time
Students record reaction time data and calculate minimum, maximum, mean, median, and mode. They participate in a class reaction time activity, observe and conduct an online experiment, and discuss and analyze the activity results.
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Tantalizing Tangrams
Students explore "area." In this tangram geometry and measurement activity, students arrange tangram pieces to find the area of characters presented in a story they listen to on a website. Website information and related...
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Balancing Act
Second graders identify the attributes of various shapes and estimate the weight of the objects. In this geometry lesson, 2nd graders identify the attributes of concrete objects and use a pan balance to weight them.
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Relationship between Exterior and Remote Interior Angles in a Triangle
In this triangle worksheet set, 9th graders find the relationship between the exterior and remote interior angles in triangles. They determine the formula, and apply it in 15 problems. They use a compass as needed to measure angles.
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A Weighty Task
Students aim to explain the need for standardization of units of measurement. They pose their own standards for the value of a kilogram and compare them with the currently used standard.
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It's About Time!
Young scholars examine the potentials, both positive and negative, of adapting an international 'Internet time' system. They create and solve word problems that require them to translate between the current time system and Internet time.
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Time and Time Again
Students analyze the effects of time zone differences on how we function as a global community, focusing particularly on the turn of the millennium as a way for students to calculate time zone differences.