Curated OER
Triangle Midsegment
Learn how to calculate the length and midsegments of triangles. Learners differentiate between similar and congruent triangles. They create a spreadsheet with their findings.
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Positive and Negative Angles and Arcs
To better understand that the intersection point of two lines lies inside a circle, learners use their keen measurement skills. They discuss arcs, rays, tangent lines, and reflex angles. Then, they put their skills to work as they...
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Breezy Energy
Third graders view photos of machines that measure wind energy and chart what they observe in the pictures and the questions they have about the pictures. In this wind energy lesson, 3rd graders make a pinwheel. Students show...
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TE Activity: Build an Anemometer
Students determine what an anemometer is and how it measures wind speed. They decide on a place to put a wind turbine by using an anemometer. They examine the role that engineers play when using wind speed to determine a place for wind...
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Investigating Segments in a Triangle
Pupils investigate segments in a triangle by constructing a triangle using Cabri Jr. They construct segments within the triangle that lie on the midpoints of the triangle's sides. Learners then compare the slope of base of the triangle...
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Kelvin Temperatures and Very Cold Things!
In this Kelvin temperature scale activity, students solve 6 problems using the equations for the conversion of Centigrade to Fahrenheit and Kelvin to Centigrade. They convert between Fahrenheit and Kelvins and Centigrade and Kelvins.
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A Tall Story
Students investigate the growth rate of a man named Bob Wadlow. In this growth rate of a man instructional activity, students determine if the growth rate of this particular man was normal or abnormal. Students bring in data...
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Build a Psychrometer
Young scholars understand that a psychrometer is a weather instrument used to detect humidity. In this psychrometer lesson, students build a psychrometer. Young scholars use their psychrometers to measure humidity activity.
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Frost Depth
Learners explore the concept of frost depth. In this frost depth lesson, young scholars conduct a scientific investigation that requires them to use a frost tube to measure, record, and graph frost depth data.
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Transformations: Translations
Students perform transformations and translations using polygons. In this geometry lesson, students perform transformations on a coordinate plane. They identify the image and pre-image of each figure.
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Reflecting a Triangle in the Coordinate Plane
Learners explore geometric concepts using technology. They manipulate the TI to find important math topics. This activity requires a TI-84 or higher.
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Virtual Earthquake
Learners visit a website that features online interactive geology and biology simulations. They observe and estimate the amplitude of the largest wave and transfer the information to a nomogram. Based on the nomogram students will...
Texas Instruments
When pH Changes What Happens?
Learners explore the pH of water in this fourth through ninth grade science instructional activity. They test water samples to determine the pH, then record observations at the aquatic site and compare their observations with the pH...
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Circles all Around
Students investigate circles. In this middle school mathematics lesson, students explore the relationship between the diameter of a circle and its circumference.
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Creating Parallelogram
Learning how to define vocabulary words related to solving parallelograms will assist your learners in identifying different parallelograms. They use the navigator to view different shapes created by moving the parallelogram around.
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Let's Do the Wave!
Students distinguish waves from matter, differentiate between transverse and longitudinal waves, use sine curves as representations of transverse waves, label characteristic properties of waves, diagram transverse waves having specific...
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Perpendicular Segments in a Circle
High schoolers explore the concept of circles as they construct a circle using a program such as Cabri Jr. Learners construct a chord and a diameter that are perpendicular, then measure the bisected chord and notice that both sides of...
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Starlight, Star Heat
In this stars worksheet, students read how astronomers calculate the temperature of a star by measuring its color. Students use a chart showing star temperatures and colors to complete 3 short answer questions.
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Points, Lines, and Distance
Young scholars calculate the distance between two points. In this geometry lesson, students define the meaning of the distance between parallel lines. They find the point of intersection of other lines.
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Angles and Transversals
Pupils explore the concept of angles and transversals. They construct parallel and non-parallel lines cut by a transversal using Cabri Jr. Learners then determine which angles are congruent and the relationship of angles when two lines...
Texas Instruments
Investigating Segments in a Quadrilateral
Investigate the properties of the shape formed by connecting the midpoints of adjacent sides of a quadrilateral. In this properties of the shape formed by connecting the midpoints of adjacent sides of a quadrilateral instructional...
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Investigating Segments in a Right Triangle
High schoolers explore the concept of right triangles as they construct a right triangle using Cabri Jr. Learners find the midpoint of the hypotenuse and construct a line from the midpoint to the vertex of the right angle. They then...
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Similar Triangles and Proportions
Pupils investigate similar triangles and proportions as they make conjectures about the length of sides of similar triangles. For this lesson plan, have your class construct similar triangles using Cabri Jr so that they share a common...
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Arc Length and Sectors
Find the length of an arc. Students relate central angles to the area and length of a sector and graph circles on the TI to make predictions.