EngageNY
Base Angles of Isosceles Triangles
Build confidence in proofs by proving a known property. Pupils explore two approaches to proving base angles of isosceles triangles are congruent: transformations and SAS. They then apply their understanding of the proof to more complex...
EngageNY
Correspondence and Transformations
Looking for a strategy to organize the information related to transformations? The materials ask pupils to identify a sequence of rigid transformations, identify corresponding angles and sides, and write a congruence statement. They...
EngageNY
Special Lines in Triangles (part 1)
Allow your pupils to become the mathematicians! Individuals explore the properties of a midsegment of a triangle through construction and measurement. Once they figure out the properties, learners use them to draw conclusions.
EngageNY
Applications of Congruence in Terms of Rigid Motions
Corresponding parts, congruent parts, congruent corresponding parts—what does it all mean? The resource challenges pupils to identify corresponding parts for pairs of figures. It uses examples of figures that undergo rigid...
Bowland
Mission: Rainforest
Young environmentally conscious mathematicians solve a variety of problems related to the central theme of uncovering illegal logging activities. They determine a base camp based on given constraints, investigate logging activities and...
Curated OER
Shapes from Shapes
Geometric shapes are really cool. Examine triangles, quadrilaterals, trapezoids, rhombuses, parallelograms, pentagons, and hexagons with your class. They draw large shapes and small shapes then compare them to understand their shapely...
Pennsylvania Department of Education
What's My Height?
Students explore geometry by conducing a student measurement activity. In this height lesson, students identify their own height by utilizing a tape measure and marking their height on a wall. Students identify their height in...
Curated OER
Measuring Angles
Middle schoolers explore angle measure as they estimate angle measure and measure and draw angles of less than 360 degrees. The instructional activity emphasizes the use of estimation when measuring angles.
Texas Instruments
REAL LIFE REAL WORLD Activity - Surveyor
Learners investigate surveying in this secondary mathematics lesson. They will explore a real world application of geometry and trigonometry as they create a plot plan using a geometry utility and calculate the area of the land parcel.
Curated OER
Triangles
Fourth graders participate in three experiments to gain understanding of triangles. In this triangles lesson, 4th graders use pipe cleaners to create bubble pipes, basketball hoops and bingo cards to display the characteristics of...
Curated OER
What are the Kinds of Triangles?
Fifth graders classify triangles. For this triangle lesson, 5th graders learn about the characteristics that make up a triangle. They are instructed through video, PowerPoint slides, and teacher-led demonstrations.
Curated OER
Finding the Area Under A Curve with Random Probability
Young scholars explore the concept of area under a curve. In this area under a curve lesson plan, students find the area under a curve using the Monte Carlo method using random points and probability. Young scholars calculate the area...
Curated OER
Our School - Our Trees
Sixth graders observe school ground trees planted nearly 3 decades ago. For this ecology lesson, 6th graders examine a group of trees planted near their campus and measure the diameter, circumference and growth of the tree compared...
Curated OER
Exploring the Circumcenter of a Triangle
Students construct the circumcenter of a triangle. In this constructing the circumcenter of a triangle lesson, students construct a triangle using Cabri Jr. Students draw perpendicular bisectors of the sides of the triangle. Students...
Curated OER
Inscribing a Circle in a Triangle
Pupils investigate inscribing a circle in a triangle. They use Cabri Jr. to draw a triangle, locate the incenter, and use the distance from the incenter to a side of the triangle to inscribe a circle. The dynamic nature of the geometry...
Curated OER
Talking about your name in math terms
Students talk about mathematical language. In this talking about your name lesson, students use the letters in their own name to review math vocabulary and concepts.
Curated OER
Tantalizing Tangrams
Students create puzzles of animals based on the 12-animals cycle of the Lunar Calendar. They use logical or spatial relationship skills. Students comprehend the mathematical term geometry. They research the history, beliefs of the...
Curated OER
Quadrilateral Attributes
Young scholars classify quadrilaterals. In this quadrilateral lesson, students identify the characteristics of quadrilaterals. They write their findings in a journal. Young scholars use geoboards to create quadrilaterals from given...
Curated OER
Finding Area of Similar Figures
Learners explore the concept of finding area of similar figures. In this finding area of similar figures instructional activity, students use pattern blocks to construct similar figures. Learners trace their construction and find the...
Curated OER
Water Conservation
Students explore types of water reserves. In this water conservation instructional activity, students brainstorm ways water are used in their homes. Students use a graduated cylinder to simulate the amount of water on Earth and the...
Texas Instruments
Investigating Segments in a Quadrilateral
Investigate the properties of the shape formed by connecting the midpoints of adjacent sides of a quadrilateral. For this properties of the shape formed by connecting the midpoints of adjacent sides of a quadrilateral lesson, learners...
Curated OER
Traditional American Indian Lodges
Students explore the mathematical properties of traditional American Indian lodges. They examine the effect of increasing sides of a polygon, calculate the surface area of prisms and cylinders, and construct a classroom size pyramid...
Curated OER
The Sum of Our Integer Intelligences
Learners complete tasks. In this Seven Intelligences lesson, students complete a variety of activities that are all based on the seven different intelligences humans are supposed to possess based on Dr. Gardener's theory. They work in...
Curated OER
Ratios in Right Triangles
Learners calculate the sides of right triangles in this trigonometric ratios lesson. They use Cabri Jr. software and TI-83 or TI-84 calculators to find the side lengths and their ratios to each other for various triangles. The provided...