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Lesson Planet

#### Congruent Rectangles

Very simply, geometers examine a pair of rectangles on graph paper and find a translation and rotation to demonstrate their congruence. A couple of questions follow to stimulate critical thinking about other possibilities.

Lesson Planet

#### Flower Vases

Which vase holds more water: a cylinder, sphere, or cone? Figure out which should be used for your sister's birthday bouquet with this practical word problem.

Lesson Planet

#### Glasses

Provide your class some practice with the dimensions of geometric figures. Here you have a set of three different-shaped, stemmed drinking glasses with diameters and heights provided. Math-minded individuals calculate the volume of each....

Lesson Planet

#### Partitioning a Hexagon

The task at hand is to partition a hexagon into two, four, and eight congruent figures. Make sure to give your wizards a sheet of triangle grid paper on which to decompose the hexagons. Have them explain which rotations, reflections, or...

Lesson Planet

#### Reflecting a Rectangle Over a Diagonal

Use the handout as guided or independent practice in drawing a reflection of a rectangle over a line. Three rectangles are provided for practice in addition to a critical thinking question.

Lesson Planet

#### Areas of Geometric Shapes with the Same Perimeter

A triangle, square, hexagon, and circle all have a perimeter of one unit. Eighth graders must attempt to find the area of each and arrange them in order from least to greatest areas. A terrific task for applying four different area...

Lesson Planet

#### A Rectangle in the Coordinate Plane

A quadrilateral is drawn on the coordinate plane, and eighth grade geometers find the length of each side and the diagonals by applying the Pythagorean theorem.

Lesson Planet

#### Comparing Snow Cones

Everyone wants to have the biggest snow cone possible, so would that be in cone-shaped cup or a more cylinder-style cup? Hungry geometry juniors compute the volume of each in this practical task.

Lesson Planet

#### Reading Literature - An Occurrence at Owl Creek Bridge

“An Occurrence at Owl Creek Bridge,” Ambrose Bierce’s short story, is used to model how structural moves, the decisions an author makes about setting, point of view, time order, etc., can be examined to reveal an author’s purpose. Groups...

Lesson Planet

#### Reading Literature - My Last Dutchess

Draw back the curtain, add a spot of joy to your class, and let learners be lessoned by a close reading exercise that models how to develop an interpretation based on evidence drawn from a text. Robert Browning’s dramatic monologue “My...

Lesson Planet

#### Artificially Selecting Dogs

Selective breeding has resulted in some novel and beautiful or useful dogs over the years. Using the American Foxhound as an example, genetics learners find out how and why they came about. Then, in small groups, they select breeds to...

Lesson Planet

#### Direct-to-consumer Genetic Testing

If you knew that you were likely to develop Alzheimer's disease in your future, how would it affect your life in the meantime? This and other similar thought-provoking questions are discussed in a lesson plan about the availability of...

Lesson Planet

#### DNA, Crime and Law Enforcement

Civil rights meets biotechnology in a instructional activity that scrutinizes the collection of DNA of citizens who have been arrested, but not yet convicted of a crime. Real-life cases are examined in which the DNA of a relative was...

Lesson Planet

#### Personalized Medicine

Genetics learners read an article and watch a video about personalized medicine and the hope it holds for treating patients more specifically than doctors currently are able to. They research, design, and produce a brochure about the...

Lesson Planet

#### Genetics, history and the American Eugenics Movement

A poignant 20-slide show introduces high schoolers to the amazing accomplishments of genomics and raises the question of eugenics. This lesson is only for mature audiences, as it deals with rape and other sensitive topics, but it is...

Lesson Planet

#### Genes, Environment and Genetic Complexity: Aggression in Humans

The highlight of this lesson plan is a 53-minute investigative video, Can Science Stop Crime?" The question asked is whether or not aggressive behavior is caused by genetic factors. The answer has to do with genetic complexity, the...