Curated OER
Compass Designs
Students investigate the properties of two and three dimensional objects. In this geometry instructional activity, students differentiate polygons based on similarity and congruence. They make observation and interpret the data.
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
Make a Box
Young scholars use specific dimensions to create a box. In this geometry instructional activity, students analyze the different properties of two and three dimensional shapes. They make conjectures and use it to solve problems.
Curated OER
Triangles in Architecture
Students find triangles in the real world. In this geometry instructional activity, students analyze and identify properties of two and three-dimensional objects. They differentiate between similarity and congruence.
Curated OER
The Search for Pythagoras' Treasure
Students identify and define properties of triangles. In this geometry lesson, students identify the missing sides and angles of right triangles. They use the rules of the Pythagorean Theorem to solve their problems.
Curated OER
Watts Up Doc?
Learners examine the wattage of a light bulb using math. In this algebra lesson, students find the inverse square of given parameter. They work in groups collecting and analyzing data.
Curated OER
Combining Foods
Learners explore addition. In this math lesson, students discover how addition and subtraction are related. Learners model related addition and subtraction facts.
Pennsylvania Department of Education
Practice Makes Perfect
Students study fact families. In this math lesson, students use fact families to play a game of concentration. Students identify subtraction facts they need to learn.
Pennsylvania Department of Education
The Weight of Things
Students explore weight. For this math lesson, students predict which item weighs more and discuss how they arrived at their decision. Students weigh several items to determine which weighs more.
Curated OER
Geo-Critters (Geometry Critters)
Learners read the book The Math Curse by Jon Scieszka and study geometry. For this geometry lesson, students identify geometric shapes and their properties. Learners create a geo-critter.
Curated OER
Why We Study Trigonometry
Students investigate the different properties of trigonometry. In this precalculus lesson, students find the six different identities of trigonometric ratios. They relate the ratios to that of a right triangle and apply it to real life...
Curated OER
Exploring Areas of Irregular Polygons
Students solve for the area of different polygons. In this geometry lesson, students identify and differentiate between regular and irregular polygons. They use properties of irregular polygons to solve problems.
Curated OER
Law of Sines and Cosines
Students solve problems using sine and cosine. In this precalculus lesson, students apply the properties of sine and cosine to solve non-right triangle problems. They use Heron's Law to find the area of a shape.
Curated OER
Investigation - Who is Right?
Third graders explore mathematics by solving problems in groups. In this math functions lesson, 3rd graders demonstrate their understanding of addition and subtraction by completing two digit math problems. Students define a list of math...
Curated OER
The Entrepreneur's Game
Twelfth graders explore the basic principles of the US free enterprise system. They examine the basic principles of the US free enterprise system including profit motive, voluntary exchange, private property rights, and competition.
Curated OER
Magical Shapes
First graders practice manipulating shapes into different locations. They see that even though shapes may look different when they are moved into different locations, the shape remains the same with the same properties. They make...
Curated OER
Mathematics: Prime and Composite Numbers
Sixth graders explore how to apply the commutative property and the rules of divisibility. They examine the difference between prime and composite numbers.
Curated OER
Inequalities Involving Absolute Value
Students solve and graph inequalities involving absolute value. They discuss and identify the basic properties of inequalities, and solve basic examples.
Curated OER
Slope Calculation
Students compute the slope of a line that passes through two points and explain how the slope formula is derived. They determine properties associated with positive, negative, undefined, and no slope.
Curated OER
Slope Calculation
Students compute the slope of a line based on the coordinates of two points on the line. In addition, they examine the relationship between the numerical value of slope and its properties on a graph.
Curated OER
Tessellations: Geometry and Symmetry
Students examine tesselllations and their geometric properties. They have a better knowledge of polygons, can identify types of symmetry in tessellations. Also students use visulization, spatial reasoning, and geometric modeling to...
Curated OER
Explorations with Shapes
Students describe, identify and compare two-dimensional figures. They also name and demonstrate the relative position of objects using directional words. They sort and compare two-dimensional figures and three-dimensional objects...
Curated OER
Scale Factors for Areas and Volumes
Students examine mathematical questions. They examine how to tackle mathematical questions and discover the effect of a change in length on area and volume. They examine the consequences of the physical properties sea animals on heat...
Curated OER
Algebra I: Multiplying Polynomials and Factoring
Young scholars use concrete models (algebra blocks) to demonstrate their processes for solving quadratic equations. They apply the commutative, associative, and distributive properties to simplify algebraic expressions and to solve...
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