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Gerrymandering
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Gerrymandering

Representations of a problem-based lesson in which students investigate the mathematical problem of redistricting and what it means for districts to be “fair.” Using statistical reasoning, students apply ratios, proportions, and percentages to compare group sizes and use basic counting and majority reasoning to determine outcomes within districts.
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Horizon
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Horizon

Representations of a problem-based lesson in which students investigate how far away the horizon appears when standing on a sandbar in the middle of the ocean. Using visualization and physical exploration of this natural setting, students pose questions and draw mathematical conclusions, applying the Pythagorean theorem to find unknown side lengths in right triangles and developing an understanding of circle properties such as radius and tangent lines.
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Longitude
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Longitude

Representations of a problem-based lesson where students investigate the mathematical idea of global coordinates through the historical context of the navigational challenges faced by Ernest Shackleton’s Antarctic exploration. The lesson helps them use proportional reasoning to relate quantities such as time, rate, and distance.
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Difference of Functions
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Difference of Functions

Representations of a lesson that uses a problem about the variable distance between two moving vehicles to guide students in discovering how subtraction can be used to relate two linear equations and solve a system of equations.
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Line Through Two Points
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Line Through Two Points

Representations of a lesson that uses a temperature conversion problem to guide students in discovering how to find the equation of a line through two points. By reasoning with Celsius and Fahrenheit values, students see how to calculate slope and intercept and then generalize to writing the equation of a line given the coordinates of two points.
Original price was: $20.00.Current price is: $0.00.
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The Midpoint of Hypotenuse Theorem
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The Midpoint of Hypotenuse Theorem

Representations of a problem-based lesson that leads to the Midpoint of the Hypotenuse Theorem where in any right angle triangle the midpoint of hypotenuse is equidistant from its vertices. Students work on a problem about finding a point equidistant from three swimmers in a rectangular pool.
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The Tangent Segments Theorem
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The Tangent Segments Theorem

Representations of a problem-based lesson that leads to the Tangent Segments Theorem which states that if a circle is tangent to two intersecting lines, the points of tangency are equidistant from the point of intersection of the lines. By working on the problem of finding a circle tangent to two intersecting lines, students are led to see that the points of tangency must be equidistant from the intersection of the lines
Original price was: $20.00.Current price is: $0.00.
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