Teachnology
Teachnology: Math Lesson Plans
Great lesson plans covering a wide-range of math-related subjects.
Math Drills
Math Drills: Percents Worksheets
Download these worksheets to sharpen your percent calculation skills. Sheets focus on the percentage of a number, percentage rate, and percentage increase/decrease.
Other
Math Learning Center: Virtual Geoboard
A geoboard that can be adapted for different grade levels. Choose from three types of geoboard and eight different elastic colors. Shapes can be duplicated, rotated, flipped, and filled in. There are also drawing tools as well as a...
Other
Casting Out Nines: A Math Computation Checking Strategy
It's a mathematician's dream come true. An easy trick for checking mathematical computations, without a calculator! Believe it or not, it works with all four operations.
Math Is Fun
Math Is Fun: Combinations and Permutations Calculator
By entering terms for how you want to combine items, you can use this calculator to determine all the different combinations and permutations you can have. For more advanced users, various rules are explained and how to use them.
PBS
Pbs: The Lowdown: The Math of Credit Cards
Explore how credit cards work in this video from KQED. In particular, you'll discover the impact and high cost of outstanding balances when borrowing money using credit cards. In the accompanying classroom activity, students discuss the...
CK-12 Foundation
Ck 12: Elementary Math: Difference Between Two Time Intervals
[Free Registration/Login may be required to access all resource tools.] Students compare the times on two clocks and calculate what time it will be before or after a given time interval, which clock shows an earlier or later time, etc....
Math Drills
Math Drills: Subtraction Worksheets
Download these worksheets to sharpen your subtraction skills. Sheets focus on single and multi-digit subtraction, subtracting across zeros and calculating complements, and subtracting in other base number systems.
Alabama Learning Exchange
Alex: Wildlife Math
This integrated lesson is the result of collaboration between Chip Blanton, a wildlife management teacher, and Greg Pendergrass, a math teacher (Ft. Payne High School). Learning to manage wildlife requires an understanding of planting...
Math Open Reference
Math Open Reference: Parallelogram: (Coordinate Geometry)
Students are able to manipulate a parallelogram on a coordinate grid to explore properties of a parallelogram and then calculate the distance of the sides, altitude, and area. The resource also includes links to further explain important...
Math Open Reference
Math Open Reference: Surface Area of a Pyramid
Use this interactive tool to find the surface area of a pyramid. Try different figures for the height and the base to see how these affect the area. Properties of a pyramid are discussed, how to use a formula to calculate the surface...
PBS
Pbs Learning Media: Probability: Targeted Math
At the end of this lesson plan, students will be able to calculate probability for real-life situations.
TED Talks
Ted: Ted Ed: The Math Behind Michael Jordan's Legendary Hang Time
Learn the affect of gravitational acceleration by calculating what Michael Jordan's hang time would be if he played basketball elsewhere in the universe.
Calculator Soup
Calculator Soup: Prime Factorization Calculator
Use this prime numbers calculator to find all prime factors of a given integer number up to 1 trillion. This calculator presents prime factors of a number, prime decomposition in exponential form, CSV (comma separated values) list of...
Calculator Soup
Calculator Soup: Fraction to Decimal Calculator
Convert a fraction to a decimal. Convert proper and improper fractions to decimals. Convert a ratio to a decimal. This calculator shows the steps and work to convert a fraction to a decimal number.
Calculator Soup
Calculator Soup: Decimal to Fraction Calculator
This calculator converts a decimal number to a fraction or a decimal number to a mixed number. For repeating decimals enter how many decimal places in your decimal number repeat.
Calculator Soup
Calculator Soup: Fraction to Percent Calculator
Convert a fraction to a percent. Convert proper and improper fractions to percentages. This calculator shows the steps and work to convert a fraction to a percentage number.
Calculator Soup
Calculator Soup: Golden Ratio Calculator
Use this calculator to find values that satisfy the golden ratio where (A+B):A = A:B. Enter any ratio term to calculate the missing golden ratio values. The answer also includes two additional, equivalent sets of golden ratio terms based...
Calculator Soup
Calculator Soup: Mixed Number to Percent Calculator
Convert mixed numbers or mixed fractions to percents. The mixed number to percentage calculator finds the decimal equivalent by finding the decimal value of the fraction, adding the decimal to the whole number part of the mixed number,...
Calculator Soup
Calculator Soup: Mixed Number to Decimal Calculator
Convert mixed numbers or mixed fractions to decimal numbers. Mixed number to decimal calculator finds the decimal equivalent by converting a mixed number, fraction, integer or whole number to a decimal and shows the work.
Calculator Soup
Calculator Soup: Simplifying Fractions Calculator
Convert improper fractions to mixed numbers in simplest form. This calculator also simplifies proper fractions by reducing to lowest terms and showing the work involved.
Calculator Soup
Calculator Soup: Scientific Notation Calculator
Use this calculator to add, subtract, multiply and divide numbers in scientific notation, E notation, or engineering notation. Answers are provided in three formats: scientific notation, E notation, and engineering notation.
Calculator Soup
Calculator Soup: Factoring Calculator
The factoring calculator finds the factors and factor pairs of a positive or negative number. Enter an integer number to find its factors.
Calculator Soup
Calculator Soup: Fractions Calculator
Use this fraction calculator for adding, subtracting, multiplying and dividing fractions. Answers are fractions in lowest terms or mixed numbers in reduced form.
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