Curated OER
Snake in the Grass: Capture/Recapture Activity
Learners estimate the total number of species in Ecuador using the capture/recapture method. They collect data about each species and act as members of a science expedition to determine the total number of species by using mathematical...
Curated OER
A Method of Front-End Arithmetic
Teach the class how to add using front-end addition. They are given a shopping list and use it to practice adding from the largest place value to the smallest. Computational math and shopping, what fun!
Khan Academy
Challenge: Constellation Maker
Populate your own universe with constellations and stars. Modify the existing JavaScript code to use the push method of arrays, and mouseX and mouseY to draw a star based on the click and position of the mouse.
Khan Academy
Challenge: SmileyFace
Two smiley faces are better than one. The interactive lesson challenges pupils to use methods to alter a program to make it more efficient. Individuals use the new code to create multiple smiley faces that speak. The engaging activity is...
Curated OER
Alternative Algorithms
Analyze algorithms for computing with rational numbers and develop fluency in their use with your math class. They work individually to solve the problems on the "Alternative Algorithms" sheet. Then, they analyze the appropriateness of...
Curated OER
The Number Line
Represent, order, and compare rational numbers in order to practice placing them on a number line. Your class will use appropriate operations, methods, and tools to compute with real numbers. Then they must explain completely and clearly...
Curated OER
Systems of Linear Equations
Introduce the inverse matrix method to solve systems of linear equations both algebraically and graphically. Using given data, your class checks their answers with graphing calculators. Handouts are included in this well-thought out lesson.
Arizona Department of Education
Area and Perimeter of Regular and Irregular Polygons
Extend young mathematicians' understanding of area with a geometry lesson on trapezoids. Building on their prior knowledge of rectangles and triangles, students learn how to calculate the area of trapezoids and other...
Curated OER
2 digit subtraction
Second graders subtract numbers 0 through 10 from 2 digit numbers using different subtraction methods. In this subtraction lesson plan, 2nd graders practice crossing out numbers in a number line, using a 10, and using their fingers to...
Curated OER
Mental Math
Students participate in an online computation game. In this computation lesson, students practice simple computations and use an internet site to review addition and subtraction facts.
Curated OER
How much rice to US farmers grow?
Fourth graders examine rice farming. For this rice farming lesson, 4th graders compute how much of the world's rice the US produces. Students gain information about the history of growing rice and how much rice other countries grow as...
K20 LEARN
Break It Apart: Multiplication Strategies
Reinforce multiplication strategies with a lesson plan that examines a word problem and the distributive property. Mathematicians work collaboratively to solve the problem, create a poster with their solution, and share their preferred...
Curated OER
When Average Is the Way to Go
Learners engage in experiences involving the mathematical concept of averages. After watching a video, students explore averaging through a variety of different methods.
Curated OER
Completing Simple Tax Forms
Twelfth graders practice filling out IRS 1040 EZ forms. They discuss various ways people pay taxes. They assess the importance of W-2 forms and apply skills using the IRS tax table to compute how much money is owed or returned.
Curated OER
Sharing Gum
Young mathematicians solve arithmetic and simple algebraic equations using properties of real numbers, equality, and inequality. Justifying the procedures is their next task. They solve a problem involving linear inequality and justify...
Curated OER
Signed Number Operations and Absolute Value
Students examine methods for adding, subtracting, multiplying and dividing signed numbers. The observe animated illustrations of each operation. students discover the basic meaning of absolute value. They compute problems after instruction.
Illustrative Mathematics
Same Base and Height, Variation 1
Four triangles are depicted for learners to construct on a geoboard. They compute and compare the areas, and so meet one of the sixth grade Common Core standards for geometry. Note that the set of triangles does not include a right...
Curated OER
Number Base Clocks
Students investigate place value in base ten. In this number sense lesson, students participate in an online lesson at www.shodor.org/interactivate/activities/NumberBaseClocks and demonstrate how to convert numbers from base ten to other...
Curated OER
Mathematics Lesson Plan
Second graders study subtraction facts. In this mathematics lesson plan, 2nd graders discuss how to solve two digit subtraction problems. Students recognize that there are many different methods or strategies one can use such as using...
Curated OER
Solving Problems
Second graders become familiar with need strategies for computation of money problems and estimating sums. In this computation lesson, 2nd graders solve real life problems to understand estimation and money problems.
Curated OER
Polyhedra
Students analyze convex polyhedra through hands on methods. In this geometrical shapes lesson, students construct paper models of convex polyhedra and identify the different properties including the number of sides, faces and edges.
Curated OER
Are Colleges Still Affordable?
Students investigate mathematical model that compares cost of higher education to potential earnings in order to decide if the investment is a good one. They compute amount to be repaid each year for the life of a student loan and then...
Curated OER
Integration By Substitution
Young scholars calculate the solution using integrals in this calculus lesson. They use the TI to create a visual of how to compute integrals. Learners also use substitution by integration and all its properties.
Curated OER
Volume and Surface Area: Which Is More?
Students explore the volume and surface area of three dimensional figures. Through the use of video, students discover three dimensional shapes, their uses in real-life applications, and methods used to calculate their volume and surface...