EngageNY
Secant Angle Theorem, Exterior Case
It doesn't matter whether secant lines intersect inside or outside the circle, right? Scholars extend concepts from the previous lesson plan to investigate angles created by secant lines that intersect at a point exterior to the circle....
Curated OER
Cooperative Conjectures
Students compare and contrast how animals have coexisted with humans. They also identify industrial changes and how animals were affected. They use the internet to research information and present their findings to the class.
Curated OER
Geometry: Classifying Quadrilaterals
Students use construction technology to identify and find relationships between the attributes of various quadrilaterals. They make and test conjectures about the distinguishing properties of parallelograms, rectangles, rhombuses,...
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Iterating Linear Functions
Students use a spreadsheet to investigate data. In this algebra lesson plan, students collect and graph data on a coordinate plane. They explain properties of a linear equation both algebraically and orally.
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Compass Designs
Young scholars investigate the properties of two and three dimensional objects. In this geometry lesson, students differentiate polygons based on similarity and congruence. They make observation and interpret the data.
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Identifying Lines of Symmetry
Students calculate the lines of symmetry using polygons. In this geometry lesson, students graph, compare and estimate using collected data. They identify different attributes to the polygons based on their sides.
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Studying Special Segments in Triangles
Students investigate special segments in triangles. In this geometry lesson, students graph, compare, estimate and predict findings based on their data. They differentiate between similarity and congruence of triangles.
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Probability and Sports
Young scholars research topics on the internet where probability is relevant. Students study statistics and probability concepts by looking at practical questions that arise in professional sports.
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Incenter of a Triangle
Tenth graders explore the properties of the incenter of a triangle. In this geometry lesson, 10th graders construct a triangle and the angle bisectors of each angle. The dynamic properties of Cabri Jr. allow students to locate and...
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The Fat and the Lean
Students collect data on calorie intake. In this algebra instructional activity, students use the collection of data to make better eating decisions. They investigate the nutritional value in food using a graph and draw conclusion from...
Pennsylvania Department of Education
Equally Likely and Unequally Likely Outcomes
Students explore probability. In this statistics/probability instructional activity, students compare experimental and theoretical probability and use experimental probability to make predictions and conjectures. Students explore the...
Curated OER
Choosing the Best Graph
Eighth graders produce and examine two sets of data and create what they believe to be the most appropriate graphs to represent these sets of data. After completing the pre-assessment, they discuss reasons for using each type of graph...
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String Of Lights
Young scholars collect, graph and analyze data. In this statistics lesson plan, students compare data using different types of graphs. They make predictions, draw conjectures as they analyze bulbs used in a holiday light set.
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How Sharp Is Your Memory?
Learners play a memory game as they explore reasoning. In this algebra instructional activity, students identify concepts using pictures and words. They model real life scenarios using hands on manipulatives.
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Proportion Problems
Seventh graders explore the concept of proportions. For this proportions lesson, 7th graders determine which offer is the better deal given two pizza offers. Students use cross products to solve proportions. Students write directions...
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Replacement and Probability
Students explore sampling with and without replacement. They explore the effects on the probability of drawing a desired object. Students examine probability and the difference between sampling with and without replacement.
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Problem Solving Using Pattern Blocks
Students use pattern blocks to create a figure that is described to them and establish a pattern based on the description of the geometric figure. In this pattern blocks lesson plan, students fill out shape and fraction worksheets.
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Problem Solving Using Power Polygons
Students investigate geometric shapes by creating figures on a plane. In this polygon lesson, students complete a worksheet based on the angles in a power polygon. Students identify the different types of polygons and define their...
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Putting Your Best Foot Forward
Third graders measure their feet and their parents' feet, record data on computer-generated graphs, and calculate and record mean, median, and mode.
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Fishing for Points TI-83/83 Plus
Ninth graders investigate the Cartesian coordinate plane. For this Algebra I lesson, 9th graders explore the coordinates of a drawing of a fish and examine the effects of moving the drawing on the ordered pairs. Students predict the new...
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Secant and Secant Segments
Students use the secant and secant segment theorem to solve problems. For this calculus lesson, students identify where the secant line crosses on a circle. They create circles and secants using cabri software.
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Fractals Rock
Students identify the repeated sequences of a pattern. In this geometry lesson, students identify fractals in patterns and nature. They construct a fractal tree and make conjectures.
Curated OER
CSI Investigation of Congruence and Similarity
Students differentiate between similarity and congruence using polygons. In this geometry lesson, students label triangles based on their properties. They find missing sides and angles using the interior sum theorem.
Curated OER
Investing
Learners collect data on investments and draw conclusions. In this algebra lesson, students analyze exponential graphs as they relate to money. They discuss the cause of an account balance being high or low.