Curated OER
Logic and Proof Writing
Students define inductive and deductive reasoning and write two column proofs. In this geometry activity, students analyze arguments and draw conclusion. They define steps necessary to arrive at the correct answer when completing proofs.
Curated OER
Secrets of Painting
Students explore colors and shapes. In this art concepts lesson, students discuss shapes, lines, and color while creating a variety of abstract designs. The instructions for several art activities are provided. Basic art vocabulary and a...
Illustrative Mathematics
Similar Triangles
Proving triangles are similar is often an exercise in applying one of the many theorems young geometers memorize, like the AA similarity criteria. But proving that the criteria themselves are valid from basic principles is a great...
Curated OER
Symmetries of a Quadrilateral I
Learners examine the properties of quadrilaterals from the point of view of rigid motion. Different types of quadrilaterals are characterized by their symmetries, so learners explore the symmetries of a described quadrilateral to...
Mathematics Assessment Project
Estimating Volume: The Money Munchers
Don't stuff money under your mattress. To find out why learners first complete a task determining how $24,000 in cash would affect the height of a mattress and whether this same amount would fit into a suitcase of given dimensions. They...
Mathematics Assessment Project
Solving Problems with Circles and Triangles
After completing a task involving examining the ratio of areas of triangles and circles in a given figure, scholars examine sample responses to identify other strategies they could use to solve the problem.
Mathematics Assessment Project
Evaluating Statements About Enlargements
Double, toil ,and double linear dimensions. Learners first complete an assessment investigating how doubling linear dimensions affects the area of pizzas and the volume of popcorn containers. They then complete an activity investigating...
Curated OER
Geometry - Measurement
Students review the procedure for determining appropriate types of measurements for given situations and measurement conversions. They figure perimeter, area, and volume of 2 and 3 dimensional objects.
Curated OER
The Flat Earth
Students differentiate between different planes. In this geometry lesson plan, students differentiate between a plane and a sphere. They discuss the Great Circle, Geodesic and Lune as it relates to the earth.
Curated OER
Mapping Natural Disasters
Students use Cartesian coordinates to plot current natural disasters. They relate location of natural disasters to their specific major project countries. Students tie in geometry within this instructional activity as connected to...
Curated OER
Angles Lesson Plan
Students explore the relationship of angles as it relates to 2 and 3-D shapes. In this geometry lesson, students differentiate between acute, obtuse, right, alternate interior, exterior and adjacent angles. They manipulate a math program...
Curated OER
Measuring and Predicting Capacity
Students investigate geometric shapes through volume and dimensions. In this geometry lesson, students measure, weigh, and calculate sizes and volume based on estimation and calculation. They review important vocabulary related to prisms...
Curated OER
Cross That Bridge
Students create paper bridges. In this geometry and architecture instructional activity, groups use legal paper and paper clips to design a bridge that will hold 100 pennies. Links to mini-lessons exploring stability of different...
Illustrative Mathematics
Toilet Roll
Potty humor is always a big hit with the school-age crowd, and potty algebra takes this topic to a whole new level. Here the class develops a model that connects the dimensions (radii, paper thickness, and length of paper) of a common...
Curated OER
Add'm and Eve in the Garden
Learners research and design five different shaped raised beds for the school garden. In small groups, they conduct Internet research, measure and create a cost analysis for the construction and design, and submit their plans to the...
Curated OER
Sculpture Shapes
Students reconstruct an ancient Greek sculpture using various geometric forms and explore different geometric forms. They create an abstract human form out of geometric shapes and create other representations out of the same shapes.
Curated OER
Mobius Band
Tenth graders discuss sides of a shape and how to collect data correctly. In this geometry activity, 10th graders examine shapes and count the surfaces on the shape. They read the history of Mobius Band and relate it to surface area.
West Contra Costa Unified School District
Finding the Equation of a Circle
Tired of going around and around for a resource on circles? Scholars determine the general equation of a circle on a coordinate plane, then participate in an activity matching equations to the radii and centers of the circles they...
Beauty and Joy of Computing
Conditional Blocks
If you use the resource, then pupils will understand conditional block instructions. In the first lab of a six-part unit, pupils learn how to use conditional statements (if/then) in block instructions for computer programming. They apply...
West Contra Costa Unified School District
Expository Writing in Math
Pupils engage in an activity where one partner reads directions while the other follows those directions to complete a math task (such as bisecting an angle). As a reflection, they examine products to see what information the best...
Curated OER
Calculation the Cricumference of Earth using "Google Earth"
Eighth graders investigate properties of circles. In this eight grade mathematics lesson, 8th graders apply proportional reasoning to data gathered with “Google Earth” to calculate equatorial and polar circumference of the Earth.
Curated OER
Patterns in Nature
Research patterns in nature which illustrate biological and mathematical concepts. Your class will discover and explore aspects of fractals, Fibonaccis numbers, whale and butterfly migration patterns, whale identification, flower...
Curated OER
Promote Precalculus
Use projects, real-world activities, and games to bring precalculus to life for students.
Texas Instruments
TI-Nspire™ CAS
When it comes to rating educational calculators, this calculator is always near the top of this list. Now it's available as an app. There is a lot of calculator power wrapped up in this app. Not only is this a fully functioning...