We found 87 reviewed resources
Congruence, Proof, and ConstructionsEngageNY
8th - 10th CCSS: Designed
This amazingly extensive unit covers a wealth of geometric ground, ranging from constructions to angle properties, triangle theorems, rigid transformations, and fundamentals of formal proofs. Each of the almost-forty lessons is broken...
Triangular IrrigationLesson Planet
9th - 12th CCSS: Adaptable
New ReviewTry to keep the pipe short. Learners investigate where to place a water pump to use the least amount of pipe. Scholars use their knowledge of reflections and congruent triangles to find the best location for the water pump. Finally, they...
Finding the Mirror LineLesson Planet
6 mins 6th - 11th CCSS: Adaptable
Where does the reflection come from? The vivdeo starts with a quick review of the form of the equation of horizontal and vertical lines and diagonals passing through the origin. Using a pre-image and an image of a reflected figure, the...
Transformations: TranslationsLesson Planet
5 mins 9th - 12th CCSS: Adaptable
Slide into vector transformations. Column vectors define the translation of figures by defining the number of units to move horizontally and vertically on the coordinate graph. Pupils develop an understanding of how to read the...
Enlargements with Negative Scale FactorLesson Planet
5 mins 6th - 12th CCSS: Adaptable
How will a scale factor affect a figure—negatively? Using a grid, the narrator of an engaging video performs a dilation with a negative scale factor. The presenter compares a positive scale factor with a negative scale factor to explain...
Enlargements with Fractional Scale FactorsLesson Planet
4 mins 6th - 12th CCSS: Adaptable
Enlargements make it bigger, right? A video shows viewers how to perform a basic dilation with a fractional scale factor. They learn how to use the scale factor to find the location of the transformed vertex by multiplying the horizontal...
Finding the Centre of EnlargementLesson Planet
5 mins 6th - 12th CCSS: Adaptable
Where did the transformation begin? Using a ruler, the narrator of a short presentation shows how to find the center of enlargement for transformed figures. Worksheets provide the class members an opportunity to practice the newly...
Describing EnlargementsLesson Planet
7 mins 6th - 12th CCSS: Adaptable
What caused that to happen? Using three aspects, a video demonstrates how to describe an enlargement or dilation. The presenter counts the lengths of the sides to determine the scale factor and a ruler to find the center of dilation.
Transformation - Translation: LessonLesson Planet
4 mins 7th - 11th CCSS: Adaptable
Develop a prime example of sliding about the coordinate plane. Using figures on the coordinate plane, a segment of an extensive geometry playlist introduces the transformation of translations. The presentation uses coordinate notation to...
Demonstrating TranslationsLesson Planet
9th - 12th CCSS: Designed
Slide into translations. Given a vector, pupils translate a quadrilateral on a grid system. The scholars use a tracing to determine the image of a quadrilateral. They label the vertices to show the correspondence between the pre-image...
Demonstrating ReflectionsLesson Planet
2 mins 9th - 12th CCSS: Designed
Reflect on assessments. The formative assessment presents a quadrilateral and a line on a grid. Pupils use patty paper or a transparency to draw the reflected image of the quadrilateral over the line. The scholars label the image to show...
Transformations and SymmetryLesson Planet
9th - 10th CCSS: Designed
Flip, turn, and slide about the coordinate plane. Pupils define the rigid motions and experiment with them before determining the relationships of the slopes of parallel and perpendicular lines. The sixth unit in a nine-part series...