Curated OER
Areas and Volumes
Tenth graders calculate the area and the volumes of polygons. In this geometry instructional activity, 10th graders review the formulas used to solve for the area and volume and explain to the class how they arrived at their answer. They...
Curated OER
Why Doesn't SSA Work?
Students investigate the relationship between angles and their sides. In this geometry lesson, students prove why SSA does not work as a true angle side relationship theorem.
Curated OER
Investigating Area Using Tangrams
Tenth graders connect the history of geometry to problem solving. In this geometry lesson, 10th graders investigate polygons through hands on manipulatives and solve problems relating to parallelograms and triangles. They calculate the...
Curated OER
Circles and Stars
Students solve multiplication problems utilizing virtual manipulatives, express multiplication problems in form of expressions, enter data into a spreadsheet and analyze results, and play game Circles and Stars.
Curated OER
It's a Fact!
Second graders investigate the concept of addition and subtraction while manipulating a variety of different resources. They focus upon the use of the games in order to keep student engagement. Then students are given the opportunity to...
Mathematics Assessment Project
Sorting Equations and Identities
Identify the identity. Learners first solve equations to find the number of solutions. Scholars then determine if given equations are always, sometimes, or never true, leading to the concept of identities.
California Education Partners
Lashelles Garden
Let knowledge grow bountifully like plants in a garden. Given a diagram of a rectangular garden split into plots, scholars determine the area of the entire garden and the areas of the individual plots. As a culminating activity, they...
Center for Mathematics and Technology
Whole Numbers: Using an Area Model to Explain Multiplication
There are many ways to work through a multiplication problem. Using an area model, kids complete several worksheets with different types of multiplication problems, including multiplying by ten, and explain how the new strategies differ...
National Security Agency
What’s Your Coordinate?
Your middle schoolers will show what they know with their bodies when they become the coordinate plane in this conceptual development unit. Starting with the characteristics of the coordinate plane, learners develop their skills by...
McGraw Hill
Stellar Parallax Interactive
How are scientists able to measure distances between stellar bodies? Turns out it's not very easy! Learners explore the process of trigonometric parallax as the method of determining these distances. They experience the same challenges...
Shodor Education Foundation
Squaring the Triangle
Teach budding mathematicians how to square a triangle with an interactive that shows a graphical proof of the Pythagorean Theorem. Pupils alter the lengths of the legs using sliders. Using the inputted lengths, the applet displays the...
Howard County Schools
Setting the Table
How many people can fit around a table? Depends on the size of the table, right? Explore patterns to generate an equation for the number of people that can fit around a table given its size.
Rice University
Algebra and Trigonometry
Move on into trigonometry. An informative eBook takes the content of a College Algebra course and adds more relating to trigonometry and trigonometric functions. The content organization allows pupils to build upon their learning by...
Curated OER
Prime and Composite Numbers with use of manipulatives (Elementary, Mathematics)
Students learn what prime and composite numbers are. They learn how to identify them by working in a group and demonstrating an understanding of one work problem with 100% accuracy using the manipulatives provided.
Curated OER
Counting Lesson Plan
Students practice counting, reading, and writing the numbers 0 through 5. In this basic counting lesson, students review a counting book, use macaroni as a manipulative, and learn a song as a means to learn and practice writing and...
Curated OER
Geo Jammin' - Day 2, Lesson 5: Eeny, Meeny, Miney, Mo
Students, in groups, use song lyrics and math to descrie two and three dimensional shapes.
Curated OER
Geo Jammin' By DeSign - Day 2, Lesson 9: Bringing It To A Fine Gloss-ary
Pupils create a glossary of geometric terms while exploring tangram manipulatives.
Curated OER
Fraction King Lesson Plan
Students combine imagination, block manipulation, and computer applets to investigate fractions.
Curated OER
Geo Jammin' By DeSign - Day 2, Lesson 7: Start At Square One
Students examine new shape possibilities by combining two and four triangles using manipulatives.
Curated OER
Area Lesson Plan
Students manipulate a variety of materials and computer applets in order to explore area and the units used to measure it.
Curated OER
Beginning Math- Addition
Students demonstrate addition. In this simple computation lesson, students are introduced to the concept of addition through using manipulatives. Students solve simple addition problems on a worksheet.
Curated OER
Kindergarten Math Counting
Students practice their counting skills. In this counting practice lesson, students count from one to five orally, write the numbers through five independently, identify the numbers, and use macaroni for a hands on counting activity.
Fuel the Brain
Brain Boosters-Money & Addition with Regrouping
If a leprechaun finds 39 cents, what are the possible coin combinations? A St. Patrick's Day math activity is a great way to keep the class excited about the holiday, but also keeps them focused on the math lesson too. By using addition...
Curated OER
How Many Pieces of Mail?
Fourth graders explore their multiplication skills. In this number sense lesson, students use their problem solving skills to solve a word problem that requires them to multiply 2 or 3-digit numbers by 1 or 2-digit numbers. This lesson ...