Curated OER
What's Missing?
Add a challenge for your young mathematicians' adventures in double-digit addition. Instead of simply computing sums in the 9 problems, they work backwards to fill in blanks among the addends. Resource makes a terrific extension or...
University of Utah
Geometry: Angles, Triangles, and Distance
The Pythagorean Theorem is a staple of middle school geometry. Scholars first investigate angle relationships, both in triangles and in parallel lines with a transversal, before proving and applying the Pythagorean Theorem.
Curated OER
Two-Digit Subtraction With and Without Regrouping
Second graders subtract two-digit numbers. In this mathematics lesson, 2nd graders subtract both with and without regrouping. Students use manipulatives and place value mats to assist in problem solving.
Curated OER
A Multi-Media Approach to Teaching The Grapes of Wrath
Integrate history, math, and art into a study of The Grapes of Wrath with a series of activities that ask learners to investigate the social, political, economic, and environmental factors at play during the 1930s. Designed to be used...
Virginia Department of Education
Functions 2
Demonstrate linear and quadratic functions through contextual modeling. Young mathematicians explore both types of functions by analyzing their key features. They then relate these key features to the contextual relationship the function...
Mathed Up!
Angles: Parallel Lines
Viewers are presented with seven problems with parallel lines and angle relationships and must use the given information to find the measures of specific angles. To finish, they explain their process in finding the measures in the problems.
CK-12 Foundation
Ellipses Centered at the Origin: Lithotripsy
Investigate ellipses through the lens of medical applications. Pupils use a medical scenario to determine the equation of an ellipse. By using the interactive, learners determine the foci and major and minor axes of the ellipse that...
Curated OER
Devising a Measure for Correlation
How well does your class understand the concept of correlation? Use an activity to explore different methods of calculating correlation. Working alone and then in groups, your class will make decisions on what math to apply to the...
Curated OER
Add It Up In Number Ville! Adding 2-Digit Numbers With and Without Regrouping
Students explore adding 2-digit numbers. In this math lesson, students identify 2-digit numbers and use base ten blocks to practice adding. Students use addition to break a code.
Curated OER
Energizing Our School
Students explore energy usage in home and in school. They examine the types of non-renewable sources and discover alternate sources of energy. Through group activities, students calculate the perimeter and area of a given room. They make...
Curated OER
Estimating Solutions
Finding approximate solutions to word problems allows users to assess the reasonableness of their answers. In a well-paced lesson, the class rounds numbers to estimate the solutions. They explain their thinking and determine if the...
Mrs. Glosser's Math Goodies
Perimeter & Area Worksheet 2
Alternate between area and perimeter with this worksheet, practicing both concepts with different shapes. Problems include examples with parallelograms, octagons, squares, rectangles, and trapezoids. The formulas are not provided, so...
Shodor Education Foundation
Introduction to the Concept of Probability
Acquaint mathematicians to the concept of probability with a discussion about the results of a game. Then have them play a dice, card, spinner, or coin game and recording the number of wins vs. the number of tries on an interactive web...
Curated OER
Around The Stop Sign
Learners analyze a drawing of a regular octagon inscribed in a circle to determine angle measures, using knowledge of properties of regular polygons and the sums of angles in various polygons to help solve the problem. They use...
Balanced Assessment
Dog Tags
Class members demonstrate a proficiency with conditional probabilities through this task. Individuals calculate probabilities using multiplication and addition. They also distinguish between repetition and non-repetition while...
Illustrative Mathematics
Area of a Trapezoid
Here is a straightforward example of how to apply the Pythagorean Theorem to find an unknown side-length of a trapezoid. Commentary gives additional information on proving that the inside of the trapezoid is a rectangle, but is...
University of Adeaide
Basic Trigonometry and Radians
A fabulous set of examples and problems that introduce basic trigonometry concepts, this packet is set apart by the care it takes to integrate both radians and degrees into the material. After defining radians, the author demonstrates...
California Education Partners
Miguel's Milkshakes
Moooove over, there's a better deal over there! The fourth segment in a series of eight requires individuals to determine the best unit cost for milk. Scholars calculate the least amount they can spend on a particular quantity of milk....
Education Development Center
Proof with Parallelogram Vertices
Geometric figures are perfect to use for proofs. Scholars prove conjectures about whether given points lie on a triangle and about midpoints. They use a provided dialogue among fictional learners to frame their responses.
Curated OER
Creating AB Patterns
Students work with patterns. In this pattern lesson, students find AB patterns in nature and the manmade world. They create their own AB pattern using math manipulatives and visual arts.
Utah Education Network (UEN)
If the Shape Fits
Geometers juggle the idea of polygons. Using a game and manipulatives, they make trapezoids and irregular polygons. They review the algorithms for finding the areas of squares and rectangles. On day one, they find the area of trapezoids,...
Curated OER
Natural Forces
Students assess the damage natural forces have caused Maryland's geographic features. In this state geography and ecology lesson, students work in a group to research ways in which weathering, erosion, and deposition have affected the...
Curated OER
Comparison Shopping
Elementary schoolers explore the concepts associated with comparison shopping, and the concept of need versus want. They also look closely at the power of advertising and become more aware of the messages that ads present. After taking...
Curated OER
Statistics and Probablility
Statistics and Probability are all about collecting, organizing, and interpreting data. Young learners use previously collected data and construct a picture graph of the data on poster board. This stellar lesson should lead to...